elementary: Fix issue of toggling border state causing visual jumps

elementary: Fix issue of toggling border state causing visual jumps

This commit partially fixes a phab ticket where toggling window border
state (elm_test -to "Window States") would cause the frame to be
destroyed thus making the window contents appear to jump around

ref T4092

NB: I call this a 'partial' fix because while it does fix the issue of
efl client apps, there is still some breakage in Enlightenment that
needs investigating.

@fix

Signed-off-by: Chris Michael <cp.michael@samsung.com>