iOS max/min frame and max/min progress ignored

## 🐛 Bug Report

Max/min frame and max/min progress are ignored/commented out in the animation view renderer. Are these disabled on purpose?

https://github.com/Baseflow/LottieXamarin/blob/develop/Lottie.Forms/Platforms/Ios/AnimationViewRenderer.cs

### Expected behavior
I would expect when I set max/min frame or max/min progress it would work.

### Reproduction steps
Set max/min frame or max/min progress the full animation still plays.

**Version:** 4.0.7

**Platform:**
- [X] :iphone: iOS
- [ ] :robot: Android
- [ ] :checkered_flag: WPF
- [ ] :earth_americas: UWP
- [ ] :apple: MacOS
- [ ] :tv: tvOS
- [X] :monkey: Xamarin.Forms

Start with Lottie.Forms/Platforms/Ios/AnimationViewRenderer.cs and inspect the max/min frame and progress handling mentioned in the issue. Reproduce the Xamarin.Forms iOS case using version 4.0.7, then verify that configured bounds control playback instead of allowing the full animation to play.

Written by the indexing model from the issue text.