Add new layout for session based media players

When the flag is enabled to use session-based actions, use the alternate
layout as well. This layout has only one size and will show all controls
regardless of location.

Bug: 209657555
Bug: 209655299
Test: atest
Test: manual - flip flag and check player layout

Change-Id: I3d048d52cdd11872d40f7735892f3e6c83462950