Issue 28547. Fix for summarizing code with invalid type parameter reference.

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

Index: pkg/analyzer/test/src/summary/summary_common.dart
diff --git a/pkg/analyzer/test/src/summary/summary_common.dart b/pkg/analyzer/test/src/summary/summary_common.dart
index 3dd4f0c8ce2fa8e9cf61745ce5427eef17698f15..45575aa40152a1ea6160c951a3c36e1e77569d30 100644
--- a/pkg/analyzer/test/src/summary/summary_common.dart
+++ b/pkg/analyzer/test/src/summary/summary_common.dart
@@ -9888,6 +9888,17 @@ void f<T, U>(bool b) {
     checkDynamicTypeRef(serializeTypeText('dynamic'));
   }
 
+  test_type_invalid_typeParameter_asPrefix() {
+    UnlinkedClass c = serializeClassText('''
+class C<T> {
+  m(T.K p) {}
+}
+''');
+    UnlinkedExecutable m = c.executables[0];
+    expect(m.name, 'm');
+    checkTypeRef(m.parameters[0].type, null, null, 'dynamic');
+  }
+
   test_type_param_codeRange() {
     if (!includeInformative) return;
     UnlinkedClass cls =