SurfaceFlinger: Add mode to apply position with resize.

For some cases, like scaled windows with shadows,
we need to be able to apply the position concurrent with
window resize. This is because the scaling of the shadows causes
the top left coordinate of the non shadow surface content
to change before and after the resize.

Bug: 28899837
Change-Id: I522eacfbbcd79707dc1e5ab71901a263b3004ba9