Update Safari support for Intl.getCanonicalLocales() (#17231)
Update Safari support for Intl.getCanonicalLocales() (#17231)

Implemented in WebKit trunk version 603.1.9:
https://github.com/WebKit/WebKit/commit/67075eeb6d10b167702a82bf82a62d582067fabf
https://github.com/WebKit/WebKit/blob/67075eeb6d10b167702a82bf82a62d582067fabf/Source/WebCore/Configurations/Version.xcconfig

That maps to 10.1, which is the same change suggested by Web Confluence.

Part of https://github.com/mdn/browser-compat-data/pull/6526.
mdn/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data,chrisdavidmills/browser-compat-data