Add Safari versions for api.EventSource.EventSource.cors_support (#11338)
Add Safari versions for api.EventSource.EventSource.cors_support (#11338)

This PR adds real values for Safari (Desktop and iOS/iPadOS) for the `EventSource.cors_support` member of the `EventSource` API, based upon commit history and date.

Commit: https://trac.webkit.org/changeset/138083/webkit
mdn/browser-compat-data,chrisdavidmills/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data