Fix issue with disable flags being set for the wrong user

- The default status bar manager disable() calls use the binder's
  calling user (which is always the primary user), so when the
  bouncer is showing for a secondary user, the flags would be
  propagated to the non-running primary user.  This CL switches
  to the specific user call to apply the flags to the current user.
  A separate token is Ok because we also don't want these particular
  disable calls to clobber disable calls from other parts of SysUI
  (they will be coalesced into one set of flags when sent so final
  state is the same)

Bug: 264638487
Test: atest SystemUITests
Test: Create secondary user, switch to 3 button and show the bouncer
      to verify the right buttons show then and after unlocking
Change-Id: I26371352a2d7e327e499faf19535769ee72175e4