[clang] [lldb] [BoundsSafety] Introduce LateParsedAttrType AST placeholder type (PR #204125)

[Erich Keane via cfe-commits]

https://github.com/erichkeane approved this pull request.

I think I'm ok with this.  I think @AaronBallman should definitely at least be aware of the direction before merging though.


https://github.com/llvm/llvm-project/pull/204125