Add state and response wrapping to StandardServletAsyncWebRequest

The wrapped response prevents use after AsyncListener onError or completion
to ensure compliance with Servlet Spec 2.3.3.4.

The wrapped response is applied in RequestMappingHandlerAdapter.

The wrapped response raises AsyncRequestNotUsableException that is now
handled in DefaultHandlerExceptionResolver.

See gh-32341

spring-web/src/test/java/org/springframework/web/context/request/async/StandardServletAsyncWebRequestTests.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.
@@ -95,9 +95,8 @@ public class StandardServletAsyncWebRequestTests {
 	@Test
 	public void startAsyncAfterCompleted() throws Exception {
 		this.asyncRequest.onComplete(new AsyncEvent(new MockAsyncContext(this.request, this.response)));
-		assertThatIllegalStateException().isThrownBy(
-				this.asyncRequest::startAsync)
-			.withMessage("Async processing has already completed");
+		assertThatIllegalStateException().isThrownBy(this.asyncRequest::startAsync)
+				.withMessage("Cannot start async: [COMPLETED]");
 	}
 
 	@Test