Doesn't work on iOS devices if json contains base64 images

[RomanTsarou]

Thanks for your job. You've made a great library.
I have a lottie animation with base64 images. It works properly on Android, but doesn't on iOS.

[alexzhirkevich]

This library doesn't implement lottie drawing. It only delegates it to the other renderers. If something doesn't work it means that this feature is not currently supported by this renderer

[LaatonWalaBhoot]

@alexzhirkevich can something like this be set for Skiko renderer airbnb/lottie-ios#2314
It works with iOS. Android already works for me.