[clang] [Clang][Sema] Print more static_assert exprs (PR #74852)

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sethp wrote:

@yronglin Thanks for introducing me to `__builtin_dump_struct`, that looks useful!

I'm not sure I see much in the way of overlap with this PR, though: would you say more about what you mean? Is there maybe some commonality that you're concerned might drift apart?

https://github.com/llvm/llvm-project/pull/74852