Disable ActionBar usage of transitions

Various artifacts across apps were coming from ActionBar's use of
the new transitions framework. Disabling transitions for now to get
things back to a more stable state.

Also, fixed some related bugs in transitions themselves, including
a change in TextChange to account for text selection, which was causing
errors in Keep's SearchView.

Issue #10860557 TextChange animator may old stale value
Issue #10819685 sometimes icons are lighter
Issue #10750525 Share and Settings icons overlap when stopping slideshow
Issue #10839551 Sometimes the search text box is right-aligned in Keep
Issue #10727484 Cursor incorrectly positioned after entering first letter during search action in keep app

Change-Id: Iad7cbf3297e18018308b8148b3519b032e63dace