[clang] Traverse attributes in `AttributedStmt`. (PR #117692)

[Aaron Ballman via cfe-commits]

https://github.com/AaronBallman commented:

Thanks for the fix! Please be sure to also add some test coverage for the changes to `clang/unittests/AST/RecursiveASTVisitorTest.cpp`.

https://github.com/llvm/llvm-project/pull/117692