Ignore: ✏️ Add Send Message Headers to the Error Message

[psychology50]

작업 이유

When a client's message is rejected for some reason, the client cannot handle the issue effectively.
For example, if the client receives an "unauthenticated" error after sending a chat message, it must resend the message to the server.
However, since the client cannot identify which message failed, we need to include a message identifier.

작업 사항

• When a business error occurs, the server sends an error message that includes the message's headers.
• If the client adds the x-message-id field to the header, they will be able to identify the specific message.

리뷰어가 중점적으로 확인해야 하는 부분

• Is the exception handling implemented correctly?

발견한 이슈

• When a @Validated error occurs, it isn't handled by HttpMessageNotReadableException.class; instead, it is caught by Exception.class
• After converting PreAuthorizeAspect from Java to Kotlin, it throws a joinPoint.proceed() cannot null error.