Fix Android CI build break in DI bootstrap path by adding missing AndroidX.Core reference

[Copilot]

The CI failure was caused by a compile-time namespace resolution error in the Android installer path used by the DI-registered bootstrap services. AndroidApkInstaller imports AndroidX.Core.Content.FileProvider, but the AndroidX Core package was not referenced by the Android library project.

• What changed

  • Added a missing NuGet reference to Xamarin.AndroidX.Core in GeneralUpdate.Maui.Android.csproj.
  • Scoped the reference to Android targets only via MSBuild condition to avoid impacting non-Android builds.

• Why this addresses the issue

  • Restores resolution of AndroidX.Core.Content used by AndroidApkInstaller, unblocking net10.0-android compilation in CI while keeping cross-target behavior unchanged.

• Project file update

  <PackageReference Include="Xamarin.AndroidX.Core"
                    Version="1.13.1.1"
                    Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'android'" />

Original prompt

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This section details on the original issue you should resolve

<issue_title>CI/DI error</issue_title>
<issue_description>Please check the cause of the error and fix it.
https://github.com/GeneralLibrary/GeneralUpdate.Maui/actions/runs/23427212372/job/68144624765</issue_description>

<agent_instructions>Please check the cause of the error and fix it.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes CI/DI error #4

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[Copilot]

Pull request overview

Fixes the Android-target build break in GeneralUpdate.Maui.Android by adding the missing AndroidX Core dependency required by the APK installer implementation, while keeping the non-Android target unaffected.

Changes:

• Added a conditional PackageReference to Xamarin.AndroidX.Core for Android target builds only.

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