[clang] [Objective C] Inclusive language: use objcmt-allowlist-dir-path=<arg>...

[clang] [Objective C] Inclusive language: use objcmt-allowlist-dir-path=<arg> instead of objcmt-white-list-dir-path=<arg>

Trying to update some options that don't at least have an inclusive language version.
This patch adds `objcmt-allowlist-dir-path` as a default alternative.

Reviewed By: akyrtzi

Differential Revision: https://reviews.llvm.org/D112591