Optimized HdrBrightnessModifier behaviour on display change

1) Otimized LightSensorSubscription on display change
- subscribe to new sensor and then unsubscribe from old to avoid SensorEventQueue recreation
2) onDiplayChange is already called in DisplayControllerHandler, no need to call in in handler
3) When new HdrBrightnessModifier is active, HdrClamper could be disabled
4) Fixed LightSensorControllerTest

Bug: b/353474430
Test: manual testing
Flag: com.android.server.display.feature.flags.new_hdr_brightness_modifier
Change-Id: I744ea06413544b553e25aff3d5ede2e995d46d9d