[clang] [AST] Ensure getRawCommentsForAnyRedecl() does not miss any redecl with a comment (PR #108475)

[Nathan Ridge via cfe-commits]

HighCommander4 wrote:

Added release note. I put it under "Bug Fixes to AST Handling" which seemed like a good fit.

https://github.com/llvm/llvm-project/pull/108475