Revert "Prevent dragging widgets to another page in tests when starting a drag."

This reverts commit 749b2b8493cd18e84edba277ea0e14b90965f060.

Reason for revert: Causing tests to fail b/246972374

Change-Id: I9fc1f6d2e924f4ac5484c6674fd0adf49d04536f
2 files changed