* remove event pooling and SyntheticEvent#persist from documents
Syntheticevent#event exists in v17, but it does nothing at the version
* add a page for legacy event pooling for _redirects
* add a warning e.persist() is no longer pooled
* Update legacy-event-pooling.md
* docs: update a redirect link for event pooling
* Update legacy-event-pooling.md
* Update legacy-event-pooling.md
* Update reference-events.md
Co-authored-by: Dan Abramov <dan.abramov@gmail.com>
Since persist() is referred to in the doc as a method for disabling event pooling, that must mean it's part of the SyntheticEvent API.
I'm proposing to state it more explicitly so that there's no doubt for newcomers like me whether it is the SyntheticEvent or the actual JS event that has the method.