Formalize event timestamps and propagate from host platform to JS (#55878)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/55878

Changelog: [General][Fixed] - Fix event timestamp propagation from host platforms to JS

This adds event timestamps as a first class concept in Fabric during dispatch, and uses the new methods to dispatch events to pass the values from the host platform (Android and iOS). If the value isn't pass, the current timestamp at the time of dispatch is used (which is close enough).

This fixes several problems:
1. Makes event timestamps account for native event dispatch delay.
2. Normalizes event timestamps across APIs (event timestamp property, Event Timing API information, etc.).

NOTE: I had to implement clock correction on iOS because the timing we get from UITouch objects doesn't use the same clock as we do in C++.

Reviewed By: javache, NickGerleman

Differential Revision: D94669354

fbshipit-source-id: 945ce5dd2d2f44f2106e631854de40a109a6cb81