XWIKI-22309: When creating a new document translation from realtime inplace editor, the content is synchronized with the original translation
* Detect when the current document locale changes without a page reload and update the realtime document locale (that is going to be used to fetch the Netflux channels).
* When creating a new realtime editor, check if the "all users" channel (that is shared) matches the current realtime document locale, and if it does not then disconnect and connect to the new channel.

(cherry picked from commit 8ed99054)