[SB][Screen Chips] Move call chip to new chips architecture.

This CL updates the new chips architecture to correctly show the call
chip when it's available and no other screen sharing events are
happening.

Bug:  332662551
Flag: com.android.systemui.status_bar_screen_sharing_chips
Test: start phone call -> see call chip
Test: then, start a screen recording -> see screen recording chip
instead, with correct time
Test: then, end screen recording -> see call chip again, with correct
time
Test: atest CallChipInteractorTest

Change-Id: I2b74c1e90081b5d41e57882d85105de43ccc1afe