[clang] [Clang] Permit noescape on non-pointer types (PR #117344)

[Erich Keane via cfe-commits]

https://github.com/erichkeane commented:

I see you've enabled it, but the tests don't actually show that this has any effect besides suppressing a diagnostic.  I want to see something that shows that the attribute is actually DOING something on non-pointer types.

Also, requires a release note.

https://github.com/llvm/llvm-project/pull/117344