[clang] [mlir] [MLIR][LLVM] Preserve default function attributes on invokes (PR #212263)

[Erich Keane via cfe-commits]

https://github.com/erichkeane commented:

This seems reasonable/right to me, but I'm not really comfortable with approving the MLIR changes.  

https://github.com/llvm/llvm-project/pull/212263