Don't pass non slider adj. as user interactions

This cl stops passing RBC on, RBC off and RBC intensity changes as
slider interactions. Normal slider interactions will be passed as a user
interaction, regardless of whether RBC is on or not. Also, ensure the
short term model (STM) is correctly reset when necessary.

                    | Old Scenario:     | New Scenario:
RBC turned on       | user initiated    | non user
                    | keep STM          | reset STM

RBC turned off      | non user          | non user
                    | reset STM         | reset STM

Change of intensity | user initiated    | non user
                    | reset STM         | reset STM

Slider interaction  | user initiated    | user initiated
 whilst RBC is on   | keep STM          | keep STM

Bug: 204298104
Bug: 202262784
Test: adb shell dumpsys display | grep -A50 mEvents
Test: manual logs and check interactions

Change-Id: I135623dc9ccca11817d5dd07d9b333b94aac30f1