Update surface size even when preserving geometry.

A recent change is causing some apps to request their
SurfaceView size before requesting visibility. We won't
apply this because of the View.GONE check in WMS. Once the app
becomes visible, it thinks the surface size hasn't changed
locally, so it appends PRESERVE_GEOMETRY to let the render thread
and reposition child control the layout size. Now we will never
set a requested width/height though and end up with 0. The line
to not update requested size while preferring geometry was
required when we were using SCALING_MODE_NO_SCALE_CROP, as
making the size smaller would apply immediately (with
the surface size acting as a reduced crop until we got a new
buffer), but now that we are using SCALING_MODE_FREEZE there
are no problems.

Bug: 27914300
Change-Id: Ic0997ab3950f3eac360260e9939b6f2ee6667453