Align AnnotatedMethod#equals and #hashcode

See gh-34375

Author: rstoyanchev

spring-core/src/main/java/org/springframework/core/annotation/AnnotatedMethod.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2024 the original author or authors.
+ * Copyright 2002-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -214,8 +214,8 @@ private boolean isOverrideFor(Method candidate) {
 
 	@Override
 	public boolean equals(@Nullable Object other) {
-		return (this == other || (other != null && getClass() == other.getClass() &&
-				this.method.equals(((AnnotatedMethod) other).method)));
+		return (this == other || (other instanceof AnnotatedMethod otherHandlerMethod &&
+				this.method.equals(otherHandlerMethod.method)));
 	}
 
 	@Override