Adds FAB animation skip on configuration change

If a configuration change occurs while a fling or spring animation is in progress,
skipping to the end of it should prevent the FAB from sticking in an unintended place.

Test: rotate the screen while the FAB is in motion. The FAB should end up at a reasonable position at side of the screen.
Bug: 344794208
Flag: EXEMPT small self-contained change
Change-Id: Ifb05e239e8b673ff737d72decb7d836f580613df