[clang] [Clang][Sema]:Fix musttail attribute on a function with not_tail_called attribute has no warning/error (PR #134465)

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MillePlateaux wrote:

@erichkeane @AaronBallman This is my first time participating in an open source project. I would like to ask if you have the same opinion so far. I have revised many versions over and over again. I just hope that the requirements can be clarified.

https://github.com/llvm/llvm-project/pull/134465