[SB][Notif] Hide the second chip if it doesn't fit.

Fixes: 369154365
Bug: 364653005
Flag: com.android.systemui.status_bar_notification_chips

Test: Trigger 2 chips that are icon-only -> verify both chips are shown
Test: Trigger 1 chip with a timer and 1 chip that's icon only -> verify
only timer chip shows because there's not enough room
Test: Verify 3-2-1 screen record countdown chip is still < 48dp
Test: Verify an icon-only tappaple chip is 48dp
Test: With status_bar_notification_chips flag off, verify screen record
& call chips still work as expected

Change-Id: I2a244c279b8a31f158e73f0665463bfac9dc6e0c