vector: Suppress watch star focus outline when animating it

It looks really funny, but that's not the effect we're aiming for.
The star is not supposed to look clickable during the rotation
animation anyway.

Bug: 65434
Change-Id: I3a7c91f5b7df0d70abd532cc234e8aa1bac9e129
(cherry picked from commit b3456db703ef66f3df5608fc8f2301b9273d2a9e)