Don't release surface if relayout is visible

There is a delay from the point we notify the client to go invisible,
to the point that request is handled. If a relayout VISIBLE happens
during this period, we need to give the client a surface so that any
pending draws will go through.

bug: 30066966

Change-Id: I0cd4e4be49f3d2d8f726963ed9e23bf0327e1d0f