base

Revert "Refine divider behavior"

This reverts commit 50cd6361d7cb50bdc0ee199f42307885abc65f0b.
Now resize happens only after the divider is released, so these changes are
no longer needed.

This also fixes resize of 'non-docked' stack in split-screen during dragging
the divider: minimizeHoles was setting incorrect 'taskPositionOther' value
which lead to incorrect insets.

Bug: 27621228
Change-Id: Iec8dc977296e204b206954847dddfc159f498930