Ensure system shortcut icons always appear in correct order

- Remove "|| true" that I accidentally left in from testing on a
  different CL
- Always reverse system shortcut icons that appear in the header of the
  ShortcutsItemView, so they are in priority order from right to left

Bug: 35766387
Change-Id: Ia7ac5a72eb2f6d3795e35bd044c426ef46fc0ccc