Resynthesize references to type parameters in default expressions from Kernel.

pkg/analyzer/lib/src/kernel/resynthesize.dart

Index: pkg/analyzer/lib/src/kernel/resynthesize.dart
diff --git a/pkg/analyzer/lib/src/kernel/resynthesize.dart b/pkg/analyzer/lib/src/kernel/resynthesize.dart
index 30a2197c528642aa97d1b388adf83f0413e2addf..0cbeb8e95a09dd7508c656bb8293dd9a1e3f277f 100644
--- a/pkg/analyzer/lib/src/kernel/resynthesize.dart
+++ b/pkg/analyzer/lib/src/kernel/resynthesize.dart
@@ -423,8 +423,8 @@ class _ExprBuilder {
       List<TypeAnnotation> arguments = _buildTypeArguments(type.typeArguments);
       return AstTestFactory.typeName3(name, arguments)..type = type;
     }
-    if (type is DynamicTypeImpl) {
-      var identifier = AstTestFactory.identifier3('dynamic')
+    if (type is DynamicTypeImpl || type is TypeParameterType) {
+      var identifier = AstTestFactory.identifier3(type.name)
         ..staticElement = type.element
         ..staticType = type;
       return AstTestFactory.typeName3(identifier)..type = type;