Summary:
The getAll() method of the [FormData](https://developer.mozilla.org/en-US/docs/Web/API/FormData) interface returns all the values associated with a given key from within a FormData object.
## Changelog
[General] [Added] - Add getAll function to FormData class for getting all parts containing that key. This is also available in web API.
Pull Request resolved: https://github.com/facebook/react-native/pull/32444
Test Plan: New test added in FormData-test.js
Reviewed By: lunaleaps
Differential Revision: D31798633
Pulled By: cortinico
fbshipit-source-id: ef29bb54e930532a671adbe707be8d1a64ff0d82
matinzdandFacebook GitHub Bot
d05a5d1551