Fix status bar crashing on connected displays

Currently if we try to bind the notification icons for all displays,
there is a crash, because the same notification icon view can't have
multiple parents.

Bug: 369337701
Test: Manually - Enable `status_bar_connected_displays` and `status_bar_simple_fragment`
Flag: com.android.systemui.status_bar_simple_fragment
Change-Id: Iba887b0696d0c1007ebc32af2926b5be1de38693