[129 merge] Disable display brightness control flag

(cherry picked from commit 4d9919f1)

Change-Id: Ief607f22f9531a682de4f58c2896d5f5ad6fbf59
Bug: b/365590641
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5846562


Reviewed-by: David Padlipsky <dpad@google.com>
Commit-Queue: Longbo Wei <longbowei@google.com>
Cr-Original-Commit-Position: refs/heads/main@{#1353396}
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5849383
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/6668@{#1132}
Cr-Branched-From: 05bc6649-refs/heads/main@{#1343869}