KeyGestureController: Fix broken actions for Assist key press and long press

Issue:
Assist button press action and assist button long press action not working.

Log:
E KeyGestureController: KEYCODE_ASSIST should be handled in interceptKeyBeforeQueueing

Analysis:
InputManager routes this key to KeyGestureController first.
KeyGestureController then consumes it and logs the WTF, so it never reaches PhoneWindowManager.

Flag useKeyGestureEventHandler is true (where?).

Solution:
Do not consume in KeyGestureController, let policy handle it in PhoneWindowManager.
Pipe functions in interceptSystemKeysAndShortcutsNew.

Bonus: Seems this would be also broken for KEYCODE_MENU. Let's add same hotfix.

Fixes: https://github.com/crdroidandroid/issue_tracker/issues/777
Change-Id: I8ecccc5e83ad963faf45719a186d69b7cdcaa90f