use mono_class_interface_offset_with_variance for interface offset in...

use mono_class_interface_offset_with_variance for interface offset in MONO_RGCTX_INFO_VIRT_METHOD_CODE (#77113)

src/mono/mono/mini/mini-generic-sharing.c

@@ -2273,7 +2273,8 @@ instantiate_info (MonoMemoryManager *mem_manager, MonoRuntimeGenericContextInfoT
 		mono_class_setup_vtable (info->klass);
 		// FIXME: Check type load
 		if (mono_class_is_interface (iface_class)) {
-			ioffset = mono_class_interface_offset (info->klass, iface_class);
+			gboolean variance_used;
+			ioffset = mono_class_interface_offset_with_variance (info->klass, iface_class, &variance_used);
 			g_assert (ioffset != -1);
 		} else {
 			ioffset = 0;

src/tests/issues.targets

@@ -1461,9 +1461,6 @@
         <ExcludeList Include="$(XunitTestBinBase)/Loader/classloader/MethodImpl/CovariantReturns/Structs/IncompatibleOverride/**">
             <Issue>Crashes during LLVM AOT compilation.</Issue>
         </ExcludeList>
-        <ExcludeList Include="$(XunitTestBinBase)/Loader/classloader/StaticVirtualMethods/RegressionTests/GitHub_71319/**">
-            <Issue>https://github.com/dotnet/runtime/issues/71910</Issue>
-        </ExcludeList>
 
         <ExcludeList Include="$(XunitTestBinBase)/JIT/HardwareIntrinsics/General/HwiOp/CompareVectorWithZero/**">
             <Issue>https://github.com/dotnet/runtime/pull/65632#issuecomment-1046294324</Issue>