Use dynamic for updates in Animated with Animation Backend (#54872)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/54872

For the testing purposes, during the development of Animation Backend, we changed the way props are modified from animated, to use the AnimatedProps. As these would currently not benefit c++ Animated, this diff reverts that to use `folly::dynamic` again.

# Changelog

[General] [Changed] - C++ animated now passes the calculated `folly::dynamic` directly to the backend, without repacking it into `AnimatedProp`

Reviewed By: zeyap

Differential Revision: D88743857

fbshipit-source-id: a9f715730e78f4278e95a2df0aa3b6d2628f1651