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-32340

spring-web/src/test/java/org/springframework/web/context/request/async/StandardServletAsyncWebRequestTests.java

@@ -94,9 +94,8 @@ class StandardServletAsyncWebRequestTests {
 	@Test
 	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