Remove pending actions when standby

[Description]
Remove action when standby
Prevent pending action from blocking sending <Standby> to device
1)  Remove NewDeviceAction + all ARC related actions
2)  Don't start NewDeviceAction & SystemAudioAutoInitiationAction
when power standby or transient to standby

Bug: 157444862

[Test Report]
AVR : Yamaha RX-V377 / Onkyo HT-R558
DVD : Pioneer CEC DVD player
Test CEC Standby off/on over 30 times: PASS

Change-Id: I3e4c3faa803afc8c19c33d9340ace098e9d7ed0b