[clang] No longer add enumeration constants to the wrong scope (PR #134998)

[Erich Keane via cfe-commits]

erichkeane wrote:

> I thought CWG's preferred direction on this was to reject entirely?

What do they wish to reject?  Defining an enum in a different declaration context than its primary context?  That seems odd.

Do you have an idea of the CWG DR?  We looked but couldn't find anything that looked like it.

https://github.com/llvm/llvm-project/pull/134998