Display the correct display name in the menu (#3388)

The current code was splitting it on a space, which made nicknames such as “Link Mauve” appear as “Link”, whereas it gets displayed correctly everywhere else in the UI.

react/features/toolbox/components/web/OverflowMenuProfileItem.js

         let displayName;
 
         if (_localParticipant && _localParticipant.name) {
-            displayName = _localParticipant.name.split(' ')[0];
+            displayName = _localParticipant.name;
         } else {
             displayName = interfaceConfig.DEFAULT_LOCAL_DISPLAY_NAME;
         }