perf(formatting numbers): stop using a default locale, use the system one
perf(formatting numbers): stop using a default locale, use the system one

When no local provided, it will use the user one.

It should be more relevant AND does provide a good perf boost.

algolia/react-instantsearch,algolia/instantsearch.js,algolia/instantsearch.js,algolia/react-instantsearch,algolia/react-instantsearch,algolia/react-instantsearch,algolia/instantsearch.js