Update the mock hotseat for the Gesture Navigation tutorial

The redesigned gesture navigation tutorial was using older files for the
mock hotseat when swiping up to home. This adds in the correct files to
align with the design and be consistent with the mobile version of the
tutorial.

Flag: ENABLE_NEW_GESTURE_NAV_TUTORIAL
Bug: 278790706
Test: Went through the gesture tutorial on small screen and large screen devices.
Change-Id: Ib3cffd1b8b62220ff0b1458e32b3825396cdb6a0