[Clang][Sema] Make UnresolvedLookupExprs in class scope explicit specializations instantiation dependent#100392

sdkrystian merged 3 commits intollvm:mainllvm/llvm-project:mainfrom

sdkrystian:fix-unresolved-lookup-decltypesdkrystian/llvm-project:fix-unresolved-lookup-decltypeCopy head branch name to clipboard