Add Intl[@@toStringTag] for Safari (#7293)
Add Intl[@@toStringTag] for Safari (#7293)

Based on discussion in #7248, we mark it as Safari 14 feature.
chrisdavidmills/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data