Add fieldtrial config for permissions HaTS

Bug: 1324559
Change-Id: If1f27d57defd83d78a88b6b6bda3bccc6693c496
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3766898


Auto-Submit: Marian Harbach <mharbach@google.com>
Commit-Queue: Balazs Engedy <engedy@chromium.org>
Reviewed-by: Balazs Engedy <engedy@chromium.org>
Commit-Queue: Andy Paicu <andypaicu@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1025627}