Prevent windows from freezing screen while timeout

The original logic lets windows be able to freeze screen again (by
setting win.mOrientationChanging=true) after WINDOW_FREEZE_TIMEOUT is
triggered before mInnerFields.mOrientationChangeComplete is set to
true. In this case, we would lose the protection of
WINDOW_FREEZE_TIMEOUT. If the app never finishes drawing the window,
the screen would keep freezing that the user cannot operate the
device.

Change-Id: I45a0a9e4b3f8d5b0b0043229bfa4890236ae8ab2