Make AndroidTypeMapImplementation public

[Copilot]

The type map selector was exposed only as the private _AndroidTypeMapImplementation property. This change publishes and documents it as AndroidTypeMapImplementation.

• MSBuild

  • Renames the property across defaults, validation, target selection, and build caching.
  • Preserves llvm-ir as the CoreCLR default and trimmable as the NativeAOT default.

• Documentation

  • Documents supported values and runtime-specific defaults.
  • Updates repository examples and build invocations.

<AndroidTypeMapImplementation>trimmable</AndroidTypeMapImplementation>

• Fixes [TrimmableTypeMap] make property that select typemap public/documented #12405

[Copilot]

Pull request overview

This PR makes the typemap selector a documented, public MSBuild property (AndroidTypeMapImplementation) instead of the private _AndroidTypeMapImplementation, updating defaults and all internal/test usage accordingly.

Changes:

• Renamed the typemap selector property across targets, tests, and CI templates, and updated build property caching/validation to use AndroidTypeMapImplementation.
• Preserved runtime-specific defaults (llvm-ir for non-NativeAOT; trimmable for NativeAOT).
• Documented the new property and updated repository docs/examples to use it.

Reviewed changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/MSBuildDeviceIntegration/Tests/InstallAndRunTests.cs	Updates device integration tests to set AndroidTypeMapImplementation.
tests/Mono.Android-Tests/Mono.Android-Tests/Mono.Android.NET-Tests.csproj	Switches test project conditions to the new property name.
tests/Mono.Android-Tests/Java.Interop-Tests/Java.Interop-Tests.targets	Updates jar selection and related conditions/comments to the new property name.
tests/Mono.Android-Tests/Java.Interop-Tests/Java.Interop-Tests.NET.csproj	Updates conditional item groups to the new property name.
src/Xamarin.Android.Build.Tasks/Xamarin.Android.Common.targets	Updates caching, validation, and typemap target imports to use AndroidTypeMapImplementation.
src/Xamarin.Android.Build.Tasks/Tests/Xamarin.Android.Build.Tests/TrimmableTypeMapBuildTests.cs	Updates build tests to set AndroidTypeMapImplementation.
src/Xamarin.Android.Build.Tasks/Tests/Xamarin.Android.Build.Tests/PackagingTest.cs	Updates packaging test to set AndroidTypeMapImplementation.
src/Xamarin.Android.Build.Tasks/Microsoft.Android.Sdk/targets/Microsoft.Android.Sdk.TypeMap.Trimmable.targets	Updates trimmable typemap target conditions to the new property name.
src/Xamarin.Android.Build.Tasks/Microsoft.Android.Sdk/targets/Microsoft.Android.Sdk.TypeMap.Trimmable.NativeAOT.targets	Updates NativeAOT trimmable typemap target conditions to the new property name.
src/Xamarin.Android.Build.Tasks/Microsoft.Android.Sdk/targets/Microsoft.Android.Sdk.TypeMap.Trimmable.CoreCLR.targets	Updates CoreCLR trimmable typemap target conditions to the new property name.
src/Xamarin.Android.Build.Tasks/Microsoft.Android.Sdk/targets/Microsoft.Android.Sdk.TypeMap.LlvmIr.targets	Passes AndroidTypeMapImplementation into the LLVM-IR typemap task.
src/Xamarin.Android.Build.Tasks/Microsoft.Android.Sdk/targets/Microsoft.Android.Sdk.NativeAOT.targets	Sets the NativeAOT default for AndroidTypeMapImplementation to trimmable.
src/Xamarin.Android.Build.Tasks/Microsoft.Android.Sdk/targets/Microsoft.Android.Sdk.DefaultProperties.targets	Sets the non-NativeAOT default for AndroidTypeMapImplementation to llvm-ir.
src/Microsoft.Android.Sdk.TrimmableTypeMap/README.md	Updates the README example to use AndroidTypeMapImplementation.
Documentation/docs-mobile/building-apps/build-properties.md	Adds documentation for AndroidTypeMapImplementation.
build-tools/automation/yaml-templates/stage-package-tests.yaml	Updates CI build args to use AndroidTypeMapImplementation.
.github/copilot-instructions.md	Updates contributor instructions/examples to use AndroidTypeMapImplementation.

[jonathanpeppers]

@dalexsoto review

[dalexsoto]

The public AndroidTypeMapImplementation surface, build-property documentation, consumers, and compatibility behavior are consistent with the accepted design.