update wallpaper window surfaces at same time as token

performSurfacePlacement "queues" prepareSurfaces onto the
next animation frame in WM. Since WallpaperWindowToken updates
its visibility in performSurfacePlacement, there is a gap
in time before the wallpaper windows themselves sync their
surface state.

At the same time, transition readiness is calculated in
performSurfacePlacement, so if both the wallpapreWindowToken
visibility and transition readiness happen together, there
is a race where wallpaper window is momentarily hidden.

This CL immediately updates wallpaper window surfaces
when visibility changes during performSurfacePcalement to
avoid this race.

Bug: 350712843
Test: Open circle-to-search, then use back-gesture to exit
Flag: EXEMPT bugfix
Change-Id: I1e90b4e9e5d36f6c529096ef6bf18a24e9d3013a