Strict Memory Checking C interop Doesn't Work on Android

### Description

Strict Memory Checking and the automatic Span conversion when interacting with C code does not work on Android. This works well on macOS and Linux but fails to build with a missing header on Android (as well as on Windows, as reported at https://github.com/swiftlang/swift/issues/86087).

### Reproduction

```swift
git clone https://github.com/vapor/authentication.git
cd authentication
swift build --swift-sdk aarch64-unknown-linux-android28
```

This fails with missing headers `lifetimebound.h` and `ptrcheck.h`:

<details>
<summary>Build errors</summary>

```
[490/498] Compiling Authentication BcryptHasher.swift
/opt/src/github/vapor/authentication/Sources/CVaporAuthBcrypt/include/../bcrypt.h:4:10: error: 'lifetimebound.h' file not found
 2 | #include <string.h>
 3 | #include <stdio.h>
 4 | #include <lifetimebound.h>
   |          `- error: 'lifetimebound.h' file not found
 5 | #include <ptrcheck.h>
 6 | 

/opt/src/github/vapor/authentication/Sources/Authentication/Passwords/Bcrypt/VaporBcrypt.swift:1:17: error: could not build C module 'CVaporAuthBcrypt'
  1 | internal import CVaporAuthBcrypt
    |                 `- error: could not build C module 'CVaporAuthBcrypt'
  2 | 
  3 | #if canImport(FoundationEssentials)
[491/498] Compiling Authentication Data+Array.swift
/opt/src/github/vapor/authentication/Sources/CVaporAuthBcrypt/include/../bcrypt.h:4:10: error: 'lifetimebound.h' file not found
 2 | #include <string.h>
 3 | #include <stdio.h>
 4 | #include <lifetimebound.h>
   |          `- error: 'lifetimebound.h' file not found
 5 | #include <ptrcheck.h>
 6 | 

/opt/src/github/vapor/authentication/Sources/Authentication/Passwords/Bcrypt/VaporBcrypt.swift:1:17: error: could not build C module 'CVaporAuthBcrypt'
  1 | internal import CVaporAuthBcrypt
    |                 `- error: could not build C module 'CVaporAuthBcrypt'
  2 | 
  3 | #if canImport(FoundationEssentials)
[492/498] Compiling Authentication PlaintextHasher.swift
/opt/src/github/vapor/authentication/Sources/CVaporAuthBcrypt/include/../bcrypt.h:4:10: error: 'lifetimebound.h' file not found
 2 | #include <string.h>
 3 | #include <stdio.h>
 4 | #include <lifetimebound.h>
   |          `- error: 'lifetimebound.h' file not found
 5 | #include <ptrcheck.h>
 6 | 

/opt/src/github/vapor/authentication/Sources/Authentication/Passwords/Bcrypt/VaporBcrypt.swift:1:17: error: could not build C module 'CVaporAuthBcrypt'
  1 | internal import CVaporAuthBcrypt
    |                 `- error: could not build C module 'CVaporAuthBcrypt'
  2 | 
  3 | #if canImport(FoundationEssentials)
[493/498] Compiling Authentication VaporBcrypt.swift
/opt/src/github/vapor/authentication/Sources/CVaporAuthBcrypt/include/../bcrypt.h:4:10: error: 'lifetimebound.h' file not found
 2 | #include <string.h>
 3 | #include <stdio.h>
 4 | #include <lifetimebound.h>
   |          `- error: 'lifetimebound.h' file not found
 5 | #include <ptrcheck.h>
 6 | 

/opt/src/github/vapor/authentication/Sources/Authentication/Passwords/Bcrypt/VaporBcrypt.swift:1:17: error: could not build C module 'CVaporAuthBcrypt'
  1 | internal import CVaporAuthBcrypt
    |                 `- error: could not build C module 'CVaporAuthBcrypt'
  2 | 
  3 | #if canImport(FoundationEssentials)
[494/498] Compiling Authentication PasswordHasher.swift
/opt/src/github/vapor/authentication/Sources/CVaporAuthBcrypt/include/../bcrypt.h:4:10: error: 'lifetimebound.h' file not found
 2 | #include <string.h>
 3 | #include <stdio.h>
 4 | #include <lifetimebound.h>
   |          `- error: 'lifetimebound.h' file not found
 5 | #include <ptrcheck.h>
 6 | 

/opt/src/github/vapor/authentication/Sources/Authentication/Passwords/Bcrypt/VaporBcrypt.swift:1:17: error: could not build C module 'CVaporAuthBcrypt'
  1 | internal import CVaporAuthBcrypt
    |                 `- error: could not build C module 'CVaporAuthBcrypt'
  2 | 
  3 | #if canImport(FoundationEssentials)
error: emit-module command failed with exit code 1 (use -v to see invocation)
[495/498] Emitting module Authentication
/opt/src/github/vapor/authentication/Sources/CVaporAuthBcrypt/include/../bcrypt.h:4:10: error: 'lifetimebound.h' file not found
 2 | #include <string.h>
 3 | #include <stdio.h>
 4 | #include <lifetimebound.h>
   |          `- error: 'lifetimebound.h' file not found
 5 | #include <ptrcheck.h>
 6 | 

/opt/src/github/vapor/authentication/Sources/Authentication/Passwords/Bcrypt/VaporBcrypt.swift:1:17: error: could not build C module 'CVaporAuthBcrypt'
  1 | internal import CVaporAuthBcrypt
    |                 `- error: could not build C module 'CVaporAuthBcrypt'
  2 | 
  3 | #if canImport(FoundationEssentials)
[496/498] Compiling Authentication BcryptError.swift
/opt/src/github/vapor/authentication/Sources/CVaporAuthBcrypt/include/../bcrypt.h:4:10: error: 'lifetimebound.h' file not found
 2 | #include <string.h>
 3 | #include <stdio.h>
 4 | #include <lifetimebound.h>
   |          `- error: 'lifetimebound.h' file not found
 5 | #include <ptrcheck.h>
 6 | 

/opt/src/github/vapor/authentication/Sources/Authentication/Passwords/Bcrypt/VaporBcrypt.swift:1:17: error: could not build C module 'CVaporAuthBcrypt'
  1 | internal import CVaporAuthBcrypt
    |                 `- error: could not build C module 'CVaporAuthBcrypt'
  2 | 
  3 | #if canImport(FoundationEssentials)
[497/498] Compiling Authentication Collection+SecureCompare.swift
/opt/src/github/vapor/authentication/Sources/CVaporAuthBcrypt/include/../bcrypt.h:4:10: error: 'lifetimebound.h' file not found
 2 | #include <string.h>
 3 | #include <stdio.h>
 4 | #include <lifetimebound.h>
   |          `- error: 'lifetimebound.h' file not found
 5 | #include <ptrcheck.h>
 6 | 

/opt/src/github/vapor/authentication/Sources/Authentication/Passwords/Bcrypt/VaporBcrypt.swift:1:17: error: could not build C module 'CVaporAuthBcrypt'
  1 | internal import CVaporAuthBcrypt
    |                 `- error: could not build C module 'CVaporAuthBcrypt'
  2 | 
  3 | #if canImport(FoundationEssentials)
[498/498] Compiling Authentication OTP.swift
/opt/src/github/vapor/authentication/Sources/CVaporAuthBcrypt/include/../bcrypt.h:4:10: error: 'lifetimebound.h' file not found
 2 | #include <string.h>
 3 | #include <stdio.h>
 4 | #include <lifetimebound.h>
   |          `- error: 'lifetimebound.h' file not found
 5 | #include <ptrcheck.h>
 6 | 

/opt/src/github/vapor/authentication/Sources/Authentication/Passwords/Bcrypt/VaporBcrypt.swift:1:17: error: could not build C module 'CVaporAuthBcrypt'
  1 | internal import CVaporAuthBcrypt
    |                 `- error: could not build C module 'CVaporAuthBcrypt'
  2 | 
  3 | #if canImport(FoundationEssentials)
Error: Error terminated(code: 1) running command: /Users/marc/Library/Developer/Toolchains/swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-24-a.xctoolchain/usr/bin/swift build --swift-sdk aarch64-unknown-linux-android28 -Xswiftc -DSKIP_BRIDGE -Xswiftc -DTARGET_OS_ANDROID
```
</details>


### Expected behavior

The package should build.

### Environment

```
marc@zap authentication % swift --version
Apple Swift version 6.3-dev (LLVM 8322c7222063676, Swift d1735f66f43c37f)
Target: arm64-apple-macosx15.0
Build config: +assertions

marc@zap authentication % skip android build --version
Swift Package Manager - Swift 6.3.0-dev

marc@zap authentication % sw_vers 
ProductName:		macOS
ProductVersion:		15.7.2
BuildVersion:		24G325

marc@zap authentication % swift sdk list
swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-24-a_android
```

### Additional information

The Swift SDK for Android uses the NDK clang includes, which do not seem to contain `lifetimebound.h` and `ptrcheck.h` for some reason.

The diff of the headers in the host toolchain and the NDK toolchain can be seen:

```diff
$ ls -1 ~/Library/Developer/Toolchains/swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-24-a.xctoolchain/usr/lib/clang/21/include/ > /tmp/clang-host.txt

$ ls -1 ~/Library/org.swift.swiftpm/swift-sdks/swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-24-a_android.artifactbundle/swift-android/android-ndk-r29/toolchains/llvm/prebuilt/darwin-x86_64/lib/clang/21/include/ > /tmp/clang-ndk.txt

$ diff /tmp/clang-*.txt

16,19d15
< __clang_spirv_builtins.h
< __float_float.h
< __float_header_macro.h
< __float_infinity_nan.h
57d52
< andes_vector.h
71d65
< availability_domain.h
117a112
> bits
120d114
< bounds_safety_soft_traps.h
135d128
< feature-availability.h
160d152
< lifetimebound.h
178a171,172
> omp-tools.h
> omp.h
192d185
< ptrcheck.h
219d211
< stdcountof.h
```

Interestingly, just manually copying the header files over with:

```
$ cp ~/Library/Developer/Toolchains/swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-24-a.xctoolchain/usr/lib/clang/21/include/{ptrcheck.h,lifetimebound.h} ~/Library/org.swift.swiftpm/swift-sdks/swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-24-a_android.artifactbundle/swift-android/android-ndk-r29/toolchains/llvm/prebuilt/darwin-x86_64/lib/clang/21/include/
```

does enable the package to be built and all the tests pass.

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Strict Memory Checking C interop Doesn't Work on Android #86237

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Strict Memory Checking C interop Doesn't Work on Android #86237

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