Files entitlements need to be case sensitive on Windows

[ldematte]

Elasticsearch Version

8.18.0, 9.0.0

Installed Plugins

No response

Java Version

bundled

OS Version

Windows

Problem Description

Files entitlements are checked in a case sensitive way. On Windows, this can lead to deny an entitlement (NotEntitlementException) for paths that should be valid.

Steps to Reproduce

The easiest way to reproduce this is to use a lowercase drive letter, e.g. switch to cd c:\path\to\elasticsearch\bin and then launch elasticsearch.bat. ES fails to start, as it checks entitlements for C:\... against c:\...

Logs (if relevant)

No response

[elasticsearchmachine]

Pinging @elastic/es-core-infra (Team:Core/Infra)