[SB] Control ongoing activity chips visibility in binder not fragment.

Bug: 364360986
Flag: com.android.systemui.status_bar_simple_fragment
Test: With ron_chips and simple_fragment flags both off, verify call
chip and screen share chips still work
Test: With ron_chips flag on and simple_fragment flag off, verify call
chip and screen share chips still work, and that multiple chips can chow
Test: With ron_chips and simple_fragment flags both on, verify call chip
and screen share chips still work, and that multiple chips can show

Change-Id: I2d90996041b0b3d0bef6246d00f0a8597861f996