Re-enable the testDragCustomShortcut test in pre-submits

In follow up need to align the code that looks for widets to work for
two pane picker in tablets.

Bug: 322820039
Flag: N/A
Test: Presubmit enabled for test
Change-Id: If8a3a7867bbafd5a08ebaef6ed354105762a8a23
1 file changed