Merge pull request #8039 from jitsi/tavram/fix-double-slash

fix(jaas) fix double slash for branded invite urls

react/features/base/connection/functions.js

 
     if (inviteDomain) {
         const meetingId
-            = state['features/base/config'].brandingRoomAlias || urlWithoutParams.pathname;
+            = state['features/base/config'].brandingRoomAlias || urlWithoutParams.pathname.replace('/', '');
 
         return `${inviteDomain}/${meetingId}`;
     }