openRight method
Programmatically triggers a right-swipe increment on the attached cell.
Behaves identically to a user swiping right past the activation threshold: runs the completion spring, applies the progressive increment, then snaps back to idle.
No-op (debug assertion in debug mode) when:
- No cell is currently attached, OR
- The cell has no SwipeActionCell.rightSwipeConfig, OR
- currentState is not SwipeState.idle.
Implementation
@override
void openRight() => _openRight++;