ZhiPuAiChatModel UserMessage handle error issues Fixes #1157 #1173

Comment From: markpollack

@lwgCodePlus it isn't clear from the support issues if this PR resolves what has been observed in testing. Can you confirm?

Comment From: markpollack

@lwgCodePlus I believe this has been fixed by https://github.com/spring-projects/spring-ai/pull/1163 Can you verify please?

Comment From: markpollack

@mxsl-gr is this PR still relevant?

Comment From: lwgCodePlus

I tested it, it's been fixed, this pr doesn't make sense