[clang] [Sema] Check arg count for builtins with CustomTypeChecking (PR #222841)

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im-lunex wrote:

Okay, I think this might be the cause here, not sure tho..
https://github.com/llvm/llvm-project/blob/712ec9ed515a15d347f2feafd8bdb5032ed2c15a/clang/lib/AST/ASTContext.cpp#L12864-L12865

https://github.com/llvm/llvm-project/pull/222841