[clang][DebugInfo][gmodules] Set runtimeLang on ObjC forward declarations#120154

Michael137 merged 2 commits intollvm:mainllvm/llvm-project:mainfrom

Michael137:clang/gmodules-fwd-decl-languageMichael137/llvm-project:clang/gmodules-fwd-decl-languageCopy head branch name to clipboard