Add support for swiping up on the status bar in OngoingCallInteractor

This change adds gesture detection to the status bar when we are
in Fullscreen mode with an ongoing call.
Swiping up on the status bar will trigger the isChipSwipedAway
flow which is used to determine if the status bar should be required
to stay visible.

Also, all the side effects from state flow changes have been
moved into an `init` block.

Testing: Manually tested and added new tests.
Bug: b/372657935
Flag: com.android.systemui.status_bar_chips_modernization

Change-Id: I014534e9ce724becdaf2507156250c8c330ae729