Fixing QS reacting to touches in notifications area in split shade

In split shade quick settings and notifications should be move independently and react to touches only in their respective areas.
This CL introduces limits QS reacting to touches to only if X position of the touch is inside their bounds.

Fixes: 196191619
Test: manual
Change-Id: Iaac383b6fa3d4f6a261f6a94f6b0fa7a91de0c95