[clang] [Clang][Sema] Fix regression due to missing ambiguity check before attempting access check. (PR #80730)

[via cfe-commits]

================
@@ -201,6 +201,8 @@ Bug Fixes to C++ Support
   parameter where we did an incorrect specialization of the initialization of
   the default parameter.
   Fixes (`#68490 <https://github.com/llvm/llvm-project/issues/68490>`_)
+- Fix regression due missing ambiguity check before checking lookup access.
+  Fixes (`80435 <https://github.com/llvm/llvm-project/issues/80435>`_)
----------------
cor3ntin wrote:

I think we should remove the changelog entry and backport instead @AaronBallman @erichkeane 

https://github.com/llvm/llvm-project/pull/80730