Don't reuse LOST_SURFACE for stopped

Fixes: 28218991

If a draw() happens while we are stopped, don't report
that the surface is lost because this will prompt
a tear-down of the surface which isn't desired. It can
result in ViewRootImpl ending up in an internally-bad state
in this case.

Change-Id: If3eb8c6bc8702299e5330bc0917952624dce3b7e