Fail inference when an instance field is referenced.

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

Index: pkg/analyzer/test/src/summary/top_level_inference_test.dart
diff --git a/pkg/analyzer/test/src/summary/top_level_inference_test.dart b/pkg/analyzer/test/src/summary/top_level_inference_test.dart
index fd130726b7bec6916b89ae8e90de15f74acc7fb5..c4aa6ca58021d28b0c019ddce6e3ed2e8ca52623 100644
--- a/pkg/analyzer/test/src/summary/top_level_inference_test.dart
+++ b/pkg/analyzer/test/src/summary/top_level_inference_test.dart
@@ -93,6 +93,7 @@ int vBitShiftRight;
 ''');
   }
 
+  @failingTest
   test_initializer_cascade() async {
     var library = await _encodeDecodeLibrary(r'''
 class A {
@@ -874,7 +875,6 @@ class B implements A {
    * A field with no annotated type that does not override anything has the
    * type inferred from its initializer.
    */
-  @failingTest
   test_instanceField_preferOverride() async {
     var library = await _encodeDecodeLibrary(r'''
 abstract class A {