Allow admin users to have bugreport icon in the power menu

Existing implementation only allows primary user to have bugreport
icon in power menu (options displayed on device power off shortcut)

With headless implementation primary/system (user 0) user will not
be visible and there will be secondary admin users which are
allowed to take bugreports.

Refactor the implementation to allow admin users to have
bug report icon in the power menu.

Test: manually checked icon is visible on power menu for admin user

Bug: 258647848
Change-Id: I60a5e1aec3cd463bc085ec899e00564fe11a8371