[clang] [Lifetime Safety] Distinguish attributed/inferred lifetimebound diagnostics (PR #220248)

[via cfe-commits]

================
@@ -20,7 +20,7 @@ namespace clang {
 class LifetimeBoundAttr;
 } // namespace clang
 
-namespace clang ::lifetimes {
+namespace clang::lifetimes {
----------------
NeKon69 wrote:

Unrelated change?

https://github.com/llvm/llvm-project/pull/220248