Fix HandlerMappingIntrospector uri matching

Prior to this commit, the `HandlerMappingIntrospector` would comparea
request with a cached request by using `String#matches` on their String
URI. This could lead to `PatternSyntaxException` exceptions at runtime
if the request URI contained pattern characters.

This commit fixes this typo to use `String#equals` instead.

Fixes gh-31946

spring-webmvc/src/main/java/org/springframework/web/servlet/handler/HandlerMappingIntrospector.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2024 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.
@@ -399,7 +399,7 @@ public class HandlerMappingIntrospector
 
 		public boolean matches(HttpServletRequest request) {
 			return (this.dispatcherType.equals(request.getDispatcherType()) &&
-					this.requestURI.matches(request.getRequestURI()));
+					this.requestURI.equals(request.getRequestURI()));
 		}
 
 		@Nullable