iOS 17 Live activity animations

I've been trying to implement an animation for my live activity.

The animation is just rotating an image back and forth a bit and offsetting it up and down a bit. It'll give an airplane icon a subtle effect of "flying". Similar to the waveform animation in Apple Music, ie it's there for a it of visual flair.

The documentation here states that withAnimation is ignored so I'm not entirely sure how these "constantly animating" effects are achieved. It seems like animations can only occur as transitions between states but it seems like overkill for my use-case of just wanting to animate a tiny bit of UI.

Any advice would be greatly appreciated