[clang] [Clang] handle invalid close location in static assert declaration (PR #108701)

[Younan Zhang via cfe-commits]

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+// RUN: %clang_cc1 -std=c++2a -triple=x86_64-linux -fsyntax-only %s -verify
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zyn0217 wrote:

Also, you might want to wrap the case with a namespace referring to the issue number.

Furthermore, I think the test should be triaged as a Parser one. Can you please move the test to that directory?

https://github.com/llvm/llvm-project/pull/108701