[llvm] [Bazel][Clang Tidy] Include builtin headers with clang-tidy (PR #67626)

[via llvm-commits]

jathu wrote:

@rnk @aeubanks any feedback or update on this? I believe this solution is reasonable enough to land as is — we can follow up with a preferred solution later on. Please note that the Bazel clang-tidy binary is *unusable* in its current state

https://github.com/llvm/llvm-project/pull/67626