[android][tests] Do not package unused CoreCLR libs when building test apks

[ivanpovazan]

As a short-term solution, this PR filters out unused CoreCLR libraries from .apks, which reduces the size of internally built Android apps (both for samples and tests).

As a long-term solution, we can:

• Identify and prevent packaging libraries which will never be used on Android
• Add the exclusion logic in the Android SDK
• Implement a component-model similar to: https://github.com/dotnet/runtime/blob/main/docs/design/mono/components.md

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Contributes to: #111954

[Copilot]

PR Overview

This PR introduces filtering logic to exclude unused CoreCLR libraries from Android APKs, reducing the overall package size for both samples and tests.

• Added a new exclusion mechanism for CoreCLR libraries based on the IsCoreCLR flag.
• Further refines filtering by conditionally excluding debugger support libraries when StripDebugSymbols is enabled.

Reviewed Changes

File	Description
src/tasks/AndroidAppBuilder/ApkBuilder.cs	Updated the logic to filter out unused CoreCLR libraries from the APK build

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

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[ivanpovazan]

FYI: This reduces the CoreCLR .apk size of the sample app from 8.1 to 5.5MB

[ivanpovazan]

/ba-g unrelated non-android test failures