Fix for using enums as InterfaceType(s) when resynthesize from Kernel.

pkg/analyzer/test/src/summary/resynthesize_kernel_test.dart

Index: pkg/analyzer/test/src/summary/resynthesize_kernel_test.dart
diff --git a/pkg/analyzer/test/src/summary/resynthesize_kernel_test.dart b/pkg/analyzer/test/src/summary/resynthesize_kernel_test.dart
index b75832f8365e39082775cabea47456bc76620261..8e564300e2ed8467d174a8750ec05b12dbd271a3 100644
--- a/pkg/analyzer/test/src/summary/resynthesize_kernel_test.dart
+++ b/pkg/analyzer/test/src/summary/resynthesize_kernel_test.dart
@@ -330,11 +330,6 @@ class ResynthesizeKernelStrongTest extends ResynthesizeTest {
     await super.test_defaultValue_refersToGenericClass_methodNG();
   }
 
-  @failingTest
-  test_error_extendsEnum() async {
-    await super.test_error_extendsEnum();
-  }
-
   @failingTest
   test_executable_parameter_type_typedef() async {
     await super.test_executable_parameter_type_typedef();