Update AbortController to more recent polyfill #54275
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Summary:
The
abort-controllerpackage hasn't been updated since 2019, and is missing a number of useful features from the current DOM specification. So, switch toabortcontroller-polyfillto get a more modern implementation.Fixes #42042, fixes #50015.
Changelog:
[General] [Changed] - Improve AbortController API support
Test Plan:
I attempted to run
packages/react-native/src/private/webapis/dom/events/__tests__/EventTarget-itest.js, which exercises AbortController, but encountered problems getting fantom set up correctly; I am therefore relying on CI (and the assumption that the upstream package knows what they’re doing).