Fix garbage when minimizing windows.

Fix garbage when minimizing windows.

Sometimes wrong rect was being rendered when minimizing windows.
This happened when layers where removed, which moved them from
one plane to another. Let's force reseting rect and plane validation
in this case.

Jira: None.
Test: We don't see flickers/grabage when windows are minimized.

Signed-off-by: Kalyan Kondapally <kalyan.kondapally@intel.com>