fix #27210, remove TypeParameterMember equality

pkg/analyzer/lib/src/dart/element/type.dart

Index: pkg/analyzer/lib/src/dart/element/type.dart
diff --git a/pkg/analyzer/lib/src/dart/element/type.dart b/pkg/analyzer/lib/src/dart/element/type.dart
index 4c2e971b1d9f2e408b6cf5d21b72931170fc5c9d..55d2e40e74929eefeba30a76e2d28986c16fb703 100644
--- a/pkg/analyzer/lib/src/dart/element/type.dart
+++ b/pkg/analyzer/lib/src/dart/element/type.dart
@@ -2526,6 +2526,12 @@ class TypeParameterTypeImpl extends TypeImpl implements TypeParameterType {
       : super(element, element.name);
 
   @override
+  ElementLocation get definition => element.location;
+
+  @override
+  DartType get bound => element.bound ?? DynamicTypeImpl.instance;
+
+  @override
   TypeParameterElement get element => super.element as TypeParameterElement;
 
   @override
@@ -2533,7 +2539,7 @@ class TypeParameterTypeImpl extends TypeImpl implements TypeParameterType {
 
   @override
   bool operator ==(Object object) =>
-      object is TypeParameterTypeImpl && (element == object.element);
+      object is TypeParameterTypeImpl && definition == object.definition;
 
   @override
   bool isMoreSpecificThan(DartType s,