[clang] [clang] Handle instantiated members to determine visibility (PR #136128)

[Erich Keane via cfe-commits]

erichkeane wrote:

Hmm... do either of you (@jplehr @DKLoehr ) have the ability to provide the author a reduced example they can work with?  We can revert in the meantime, but without a reduction provided (or AT LEAST a pre-processed example), there isn't anything we can really do about these reports.

Our crashes usually provide dumps (the location should be printed in the crash) which should provide the info needed to do so.

https://github.com/llvm/llvm-project/pull/136128