Support design - fix FAB elevation in API 21

The animations are really broken here. A hacky fix
has been added in the past for versions 22-24 and now
for version 21 just by bluntly set the elevation and
translationZ by respecting the logic in the animations
for 22-24.

Bug: 33126409
Test: identified this bug from an existing test.
Change-Id: I0cba73cda030ef7a66ffad452bc0f14b7687fc52
1 file changed