[clang] [BoundsSafety][NFC] Introduce logic to replace the LateParsedAttrType placeholder with CountAttributedType (PR #212906)

[Oliver Hunt via cfe-commits]

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

Minor nits, but I'd also like a more structured approach to maintaining `PointerOrArrayDepth`

https://github.com/llvm/llvm-project/pull/212906