Option to disable cache composition doesn't work

[markrietveld]

Describe the bug
The Composition still gets cache in LottieCompositonCache, regardless of the setting. This is because the custom/null cache key is ignored here: https://github.com/airbnb/lottie-android/blob/master/lottie/src/main/java/com/airbnb/lottie/LottieCompositionFactory.java#L219. It should be calling fromRawResSync(context, rawRes, cacheKey); instead.

It looks like this was missed in ee94224

Steps To Reproduce
Steps to reproduce the behavior:

1. Set cacheComposition to false on LottieAnimationView
2. Attach a debugger and set a breakpoint in LottieCompositionCache.put
3. Load an animation from a raw res
4. See that cacheKey is non-null, even though it should be null.