Merge "Modify dimming threshold from 0.2 to 0.9." into main am: a1283449 am: c6e22d85

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2921266



Change-Id: I38d4f07b640c0087d7252a2892e7c50ea9c6a30a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>