Fixing background jump when closing a widget

We do not add background animation when opening target is translucent
Added additional check to not animate background if launcher is not
closing (which is already a subset of all-targets-translucent)

Also removing reverse background animation from widgets, similar
to app-icons as it is never added for launcherNotClosing path

Bug: 242379946
Test: Added translucent activtiy and widget and verified manually
      that the behavior does not change
Change-Id: Icda8007c0063295bf8431c00a0f0b665ecdef109