[release/8.0.1xx-xcode16.0] [tests] Ignore a few tests that fail on d…

…esktop/arm64. (#21964)

Ref: #19781

Also remove some outdated watchOS ignores.

Backport of #21322, #21403 and #21451.

tests/monotouch-test/ObjCRuntime/RegistrarTestGenerated.cs

@@ -1,3 +1,4 @@
+using ObjCRuntime;
 using System.Runtime.CompilerServices;
 
 using NUnit.Framework;
@@ -8,13 +9,28 @@ public partial class RegistrarTestGenerated {
 		void AssertIfIgnored ([CallerMemberName] string testCase = null)
 		{
 			switch (testCase) {
-#if __WATCHOS__
-			case "Test_c":
-			case "Test_cc":
-			case "Test_ccc":
-			case "Test_s":
-			case "Test_sss":
-				Assert.Ignore ("https://github.com/mono/mono/issues/8486");
+#if __MACCATALYST__ || __IOS__ || __TVOS__
+			case "NSNumberBindAs_Boolean_Array_Overrides":
+			case "NSNumberBindAs_Byte_Array_Overrides":
+			case "NSNumberBindAs_Double_Array_Overrides":
+			case "NSNumberBindAs_Int16_Array_Overrides":
+			case "NSNumberBindAs_Int32_Array_Overrides":
+			case "NSNumberBindAs_Int64_Array_Overrides":
+			case "NSNumberBindAs_nint_Array_Overrides":
+			case "NSNumberBindAs_NSStreamStatus_Array_Overrides":
+			case "NSNumberBindAs_nuint_Array_Overrides":
+			case "NSNumberBindAs_SByte_Array_Overrides":
+			case "NSNumberBindAs_Single_Array_Overrides":
+			case "NSNumberBindAs_UInt16_Array_Overrides":
+			case "NSNumberBindAs_UInt32_Array_Overrides":
+			case "NSNumberBindAs_UInt64_Array_Overrides":
+				// https://github.com/xamarin/xamarin-macios/issues/19781
+#if __MACCATALYST__
+				if (Runtime.IsARM64CallingConvention)
+#elif __IOS__ || __TVOS__
+				if (Runtime.IsARM64CallingConvention && Runtime.Arch == Arch.SIMULATOR)
+#endif
+					Assert.Ignore ("https://github.com/xamarin/xamarin-macios/issues/19781");
 				break;
 #endif
 			default: