[clang] [clang][Sema] Diagnose exceptions only in non-dependent context in discarded `try/catch/throw` blocks (PR #139859)

[Rajveer Singh Bharadwaj via cfe-commits]

Rajveer100 wrote:

I have made the changes, let me know if this is fair enough.

https://github.com/llvm/llvm-project/pull/139859