[release/10.0.1xx-rc1] [net10.0] Add UnconditionalSuppressMessage attributes to fix NativeAOT (#31240)

Backport of #31231 to release/10.0.1xx-rc1

/cc @rmarinho

Author: rmarinho

src/Controls/tests/TestCases.HostApp/Issues/Issue21112.cs

@@ -97,6 +97,8 @@ public class Issue21112ViewModel
 	{
 		public ICommand NavigateCommand { get; set; }
 
+		[UnconditionalSuppressMessage("TrimAnalysis", "IL2111", 
+			Justification = "The lambda expression in NavigateCommand is only used with known page types that have public parameterless constructors.")]
 		public Issue21112ViewModel()
 		{
 			NavigateCommand = new Command<Type>(async ([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)] Type pageType) =>

src/Controls/tests/TestCases.HostApp/TestCases.cs

@@ -9,10 +9,24 @@ public class TestCaseScreen : CollectionView
 		{
 			public static Dictionary<string, Action> PageToAction = new Dictionary<string, Action>(StringComparer.OrdinalIgnoreCase);
 
+			[UnconditionalSuppressMessage("TrimAnalysis", "IL2112", 
+				Justification = "TestCaseScreen fields are not accessed via reflection in NativeAOT builds since reflection-based test discovery is disabled.")]
 			bool _filterBugzilla;
+			
+			[UnconditionalSuppressMessage("TrimAnalysis", "IL2112", 
+				Justification = "TestCaseScreen fields are not accessed via reflection in NativeAOT builds since reflection-based test discovery is disabled.")]
 			bool _filterNone;
+			
+			[UnconditionalSuppressMessage("TrimAnalysis", "IL2112", 
+				Justification = "TestCaseScreen fields are not accessed via reflection in NativeAOT builds since reflection-based test discovery is disabled.")]
 			bool _filterGitHub;
+			
+			[UnconditionalSuppressMessage("TrimAnalysis", "IL2112", 
+				Justification = "TestCaseScreen fields are not accessed via reflection in NativeAOT builds since reflection-based test discovery is disabled.")]
 			bool _filterManual;
+			
+			[UnconditionalSuppressMessage("TrimAnalysis", "IL2112", 
+				Justification = "TestCaseScreen fields are not accessed via reflection in NativeAOT builds since reflection-based test discovery is disabled.")]
 			string _filter;
 
 			void CheckInternetAndLoadPage(Type type)
@@ -88,6 +102,8 @@ Action ActivatePageAndNavigate(IssueAttribute issueAttribute, Type type)
 				return navigationAction;
 			}
 
+			[UnconditionalSuppressMessage("TrimAnalysis", "IL2026", 
+				Justification = "ActivatePage method is only called in non-NativeAOT builds where reflection-based test discovery is enabled.")]
 			Page ActivatePage([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)] Type type)
 			{
 				var page = Activator.CreateInstance(type) as Page;
@@ -136,6 +152,8 @@ public bool Matches(string filter)
 				}
 			}
 
+			[UnconditionalSuppressMessage("TrimAnalysis", "IL2112", 
+				Justification = "TestCaseScreen fields are not accessed via reflection in NativeAOT builds since reflection-based test discovery is disabled.")]
 			readonly List<IssueModel> _issues;
 
 			void VerifyNoDuplicates()
@@ -322,6 +340,8 @@ from issueModel in _issues
 				ItemsSource = issues;
 			}
 
+			[UnconditionalSuppressMessage("TrimAnalysis", "IL2112", 
+				Justification = "TestCaseScreen fields are not accessed via reflection in NativeAOT builds since reflection-based test discovery is disabled.")]
 			HashSet<string> _exemptNames = new HashSet<string> { };
 
 			// Legacy reasons, do not add to this list