[native] Rename `saveButtonRef` to `mediaIconsRef` and move up to a wrapping view
[native] Rename `saveButtonRef` to `mediaIconsRef` and move up to a wrapping view

Summary:
Note: had to add an additional `<View>` since we can't call `.measure()` on reanimated `Animated.View`

It looks like you can in reanimated 2 w/ the `useAnimatedRef` hook: https://www.reanimated2.com/docs/next/api/nativeMethods/measure

Test Plan: Continued to look/work as expected on iOS simulator

Reviewers: ashoat

Reviewed By: ashoat

Subscribers: KatPo, palys-swm, Adrian

Differential Revision: https://phabricator.ashoat.com/D1691

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