[clang] [Clang] [NFC] Refactor AST visitors in Sema and the static analyser to use DRAV (PR #115144)

[Aaron Ballman via cfe-commits]

https://github.com/AaronBallman commented:

Given the size of the PR, I didn't go over it with a fine-toothed comb as the changes are mostly mechanical. However, the changes I spot-checked looked correct to me.

LGTM, but please don't land until the merge conflicts are resolved and precommit CI comes back green.

Thank you for this work!

https://github.com/llvm/llvm-project/pull/115144