Disable FLAG_LAYOUT_NO_LIMITS window flag in multi-window mode

FLAG_LAYOUT_NO_LIMITS allows a window to extend its dimensions outside
the screen area by setting the display frame to a really big value.
We don't want this in multi-window mode since all window frames should
be limited to their parent task/stack dimensions.

Bug: 27577275
Change-Id: Ie0a8b8c13de91561e06dadc27aac3a5ba209d05b
3 files changed