Fixed filtering nested animated styles.

[jmysliv]

Description

flattenArray function was not used during filtering non-animated props, so when the style property in Animated.View was a nested array, the app was crashing. I've changed that so know nested array can be passed as a style property.
Fixes #2188

[piaskowyk]

🚀

[thespacemanatee]

Seems to be broken again in 2.2.4, not sure if it's the same issue but some of my styles broke. The offending style combination had a style attribute (fontSize) that was set manually, and an animatedStyle that was animating the same style attribute (fontSize). This didn't cause a crash previously although it did highlight the fact that we had duplicated fontSize stylings.

[renchap]

@jmysliv I can confirm what @thespacemanatee is seeing, this crashes again on Android (not iOS) if style is an array, with TypeError: property is not configurable on 2.2.4.

Should I open a new issue for this?

[markdalgleish]

I ran into the same issue, but it looks like this fix landed in v2.3.0-alpha.2 — not available in latest stable version yet (v2.2.4 at time of writing).

[piaskowyk]

@markdalgleish Probably next week, we will release 2.3.0 as stable