Fix animation glitch on iOS 17

[borsosbe]

• Remove combine
• For iOS 17 or later use the new animation callback
• Below that use Task with a delay based on Liquid period
• Tested on physical devices running iOS 16, 17

[mplawley]

I encountered the same animation glitch with the repo's README's example Liquid code and pointed my Liquid package dependency to commit dbd0a02b00de9a4d0171cf63b4998991d13b8502.

I tested the fix on this PR on the following devices:

• iPhone 15 simulator running iOS 16.1.
• iPhone 15 simulator running iOS 17.2.
• iPhone 16 Pro (real device) running iOS 18.0.1

It worked for all three.