Correct Brightness event values.

BrightnessEvent should have the settings value (independent of whether
it is applied, since the information is available in the flags or
irrelevant).

Logging should have -1 for the non-applied settings.

Test: atest BrightnessEventTest
Bug: 236234158

Change-Id: I1e65707d55e78105c1f78f76bfd9fc17bca4b074
3 files changed