[clang] [clang] Disallow VLA type compound literals (PR #91891)

[Jim M. R. Teichgräber via cfe-commits]

J-MR-T wrote:

> Btw, you can probably move this PR out of Draft status, it seems awfully close to finished

I'll finish implementing your suggestions, run the tests again locally and then move it out of draft, if that's alright with you :).


https://github.com/llvm/llvm-project/pull/91891