Replace TYPE_STATUS_BAR_PANEL with the SUB_PANEL

TYPE_STATUS_BAR_PANEL is deprecated and the replacement is in a
different Z layer. SUB_PANEL ensures that the view appears in the same
place as before.

Bug: 10414819
Test: existing robo tests
Change-Id: I16113e5140e753e87e55467230b5b6fbf21deffd