Apply transitionGroup=true for static shadow

Current code only add transitionGroup=true to ShadowOverlayContainer
for dynamic shadow.

Apply transitionGroup=true to ShadowOverlayContainer when static shadow is
used and also when ShadowOverlayContainer is not used at all.

Bug 24416053

Change-Id: I805c52b46d0438d2a0e04568cd97bf94d1ff0ea1
6 files changed