[llvm] [clang]Transform uninstantiated ExceptionSpec in TemplateInstantiator (PR #68878)

[Erich Keane via llvm-commits]

https://github.com/erichkeane commented:

The release note needs work, and I'm not completely sure what you mean to say, if you try to clarify it, perhaps I can help correct the wording.  Else LGTM.

https://github.com/llvm/llvm-project/pull/68878