Check if self is being pushed to navigation controller

isAnimatingToNavigationStack.swift

    private var isAnimatingToNavigationStack: Bool {
        guard let transitionCoordinator = transitionCoordinator,
              let viewControllers = navigationController?.viewControllers,
              let from = transitionCoordinator.viewController(forKey: .from),
              let to = transitionCoordinator.viewController(forKey: .to),
              let indexOfFrom = viewControllers.index(of: from),
              let indexOfTo = viewControllers.index(of: to)
              else { return false }
        
        return to == self && indexOfTo - 1 == indexOfFrom
    }