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

[Justin Stitt via cfe-commits]

JustinStitt wrote:

BTW doc build failures linked to here: https://github.com/llvm/llvm-project/pull/109220

unrelated to my changes 👍 

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