Remove unnecessary DAM attributes

[simonrozsival]

Summary

• remove DynamicallyAccessedMembers annotations from runtime type/value manager and marshaler extensibility points where broad rooting is more harmful than useful
• update NativeAOT samples, unshipped API entries, and test overrides to match the updated signatures

Testing

• dotnet build tests/Java.Interop-Tests/Java.Interop-Tests.csproj --nologo -m:1
• dotnet build --nologo -m:1

[Copilot]

Pull request overview

This PR reduces trimming/AOT rooting pressure by removing DynamicallyAccessedMembers annotations from several runtime type/value-manager and marshaler extensibility points, shifting responsibility to explicit RequiresUnreferencedCode/feature-guarded call sites and updating tests/samples/PublicAPI accordingly.

Changes:

• Removed broad DynamicallyAccessedMembers annotations from JniTypeManager/JniValueManager/JniValueMarshaler APIs and related overrides.
• Introduced/adjusted trimming annotations (RequiresUnreferencedCode, FeatureGuard) around reflection-heavy paths.
• Updated tests, NativeAOT samples, and PublicAPI.Unshipped.txt to match signature/API removals.

Show a summary per file

File	Description
tests/Java.Interop-Tests/Java.Interop/JniValueMarshalerContractTests.cs	Updates test marshaler override signature to match removed DAM annotations.
tests/Java.Interop-Tests/Java.Interop/JavaVMFixture.cs	Removes return DAM annotation from test override.
src/Java.Runtime.Environment/Java.Interop/JreTypeManager.cs	Updates override signature to match removed DAM annotations.
src/Java.Interop/PublicAPI.Unshipped.txt	Removes unshipped API entries for removed type(s)/member(s).
src/Java.Interop/Java.Interop/RuntimeFeature.cs	Adds feature guard for trimming, but currently introduces a switch-caching behavior change.
src/Java.Interop/Java.Interop/ManagedPeer.cs	Adds RequiresUnreferencedCode and removes suppressions tied to prior DAM behavior.
src/Java.Interop/Java.Interop/JniValueMarshaler.cs	Removes DAM-related constants/annotations from marshaler extensibility points.
src/Java.Interop/Java.Interop/JniStringValueMarshaler.cs	Updates override signature to match removed DAM annotations.
src/Java.Interop/Java.Interop/JniRuntime.ReflectionJniValueManager.cs	Removes DAM usage and updates type enumeration to GetTypes. Adds RequiresUnreferencedCode to reflection-heavy marshalers.
src/Java.Interop/Java.Interop/JniRuntime.ReflectionJniTypeManager.cs	Removes GetReflectionConstructibleTypes and DAM annotations in overrides/registration.
src/Java.Interop/Java.Interop/JniRuntime.JniValueManager.cs	Removes DAM annotations from several APIs (except where still retained), updating generic marshaler APIs/signatures.
src/Java.Interop/Java.Interop/JniRuntime.JniTypeManager.cs	Removes DAM annotations and removes the ReflectionConstructibleType API surface.
src/Java.Interop/Java.Interop/JniBuiltinMarshalers.cs	Adjusts placement of builtin marshaler map, but is T4-generated and should be updated via the .tt template.
src/Java.Interop/Java.Interop/JavaPrimitiveArrays.cs	Removes DAM annotations from marshaling entrypoints.
src/Java.Interop/Java.Interop/JavaObjectArray.cs	Adjusts generic parameter annotation formatting and removes now-unneeded DAM usage in marshaler override signature.
src/Java.Interop/Java.Interop/JavaArray.cs	Removes DAM annotation from JavaPrimitiveArray<T>.
samples/Hello-NativeAOTFromJNI/NativeAotTypeManager.cs	Removes DAM return annotation, but suppression text now references removed DAM behavior.
samples/Hello-NativeAOTFromAndroid/NativeAotTypeManager.cs	Removes DAM return annotation, but suppression text now references removed DAM behavior.

Copilot's findings

• Files reviewed: 18/18 changed files
• Comments generated: 4