## Summary
We found a bug in the logic in
https://github.com/facebook/react/pull/36253 and we realized it's very
inconvenient to iterate on the implementation when it's in this
repository, as we're forced to then synchronize it to RN to test
changes.
This moves the entire implementation to RN for simplicity and also to
simplify some clean ups in the future (like removing `top` prefixes from
native event types).
## How did you test this change?
The changes are gated. Will test e2e in RN.
0418c8a8b6