Fit all non base windows to display instead of just children.

If you want to layout a dialog offscreen you should need
FLAG_NO_LIMITS, otherwise we should adjust you or clip
you to the display as requested by gravity flags. This makes
the docked behavior match freeform. I'm not totally sure why
base application windows still can't be fit to display outside of
fullscreen, it has to do with drag resizing IIRC.

Bug: 30225290
Change-Id: Iebecf5f12359ac0d4b7ea3f08d360fde93046fa9