[clang] [Clang] Implement labelled type filtering for overflow/truncation sanitizers w/ SSCLs (PR #107332)

[Vitaly Buka via cfe-commits]

https://github.com/vitalybuka requested changes to this pull request.

Please don't forget to "re-request" after update, fell free to ping me in chat as well.

https://github.com/llvm/llvm-project/pull/107332