Send corrent SUW insets for taskbar portrait vs landscape

* There were two separate blocks of code for sending insets
for Taskbar during SUW, consolidate those
* We also weren't changing Taskbar window height corresponding
to the added insets/change of height for different
orientations in SUW

Fixes: 253538830
Test: Went through SUW and switched orientations,
no back button overlap

Change-Id: Ifb3bc1c20a793ef062bf338a3bdf933b8ae98c28