[clang] [Clang][Sema] Always use latest redeclaration of primary template (PR #114258)

[via cfe-commits]

asmok-g wrote:

Kind ping!

This is blocking us in google and we'd appreciate merging today. Even trying to internally revert the offending patch is difficult as i touches many core files.

Thanks

https://github.com/llvm/llvm-project/pull/114258