feat(frontend): Hide stake balance in Send and Swap modal

[AntonioVentilii]

Motivation

It does not really make sense to show the stake balance included in the network dropdown when we are in the send and swap modals.

[Copilot]

Pull request overview

This PR adds a showStakeBalance prop to control whether stake balances are displayed in network selection dropdowns. The feature defaults to true to maintain existing behavior, but is set to false in Send and Swap modals where displaying stake balances is not relevant.

Key Changes

• Added showStakeBalance optional prop with default value of true to maintain backward compatibility
• Disabled stake balance display in Send and Swap modal network filters by passing showStakeBalance={false}
• Threaded the prop through component hierarchy: ModalNetworksFilter → NetworkSwitcherList → MainnetNetwork

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
ModalNetworksFilter.svelte	Added showStakeBalance prop with default value true and passed it to NetworkSwitcherList component
SwapModalWizardSteps.svelte	Set showStakeBalance={false} when rendering ModalNetworksFilter to hide stake balances in swap flow
SendModal.svelte	Set showStakeBalance={false} when rendering ModalNetworksFilter to hide stake balances in send flow
NetworkSwitcherList.svelte	Added showStakeBalance prop and passed it to MainnetNetwork component, with minor formatting improvements
MainnetNetwork.svelte	Added showStakeBalance prop and conditionally includes stake balance in USD balance calculation; contains a duplicate line bug

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[DenysKarmazynDFINITY]

LGTM, thanks