[RN] Fix incorrect JitsiMeetJS.init error handling

react/features/base/lib-jitsi-meet/actions.js

             .catch(error => {
                 dispatch({
                     type: LIB_INIT_ERROR,
-                    lib: { error }
+                    error
                 });
 
                 // TODO Handle LIB_INIT_ERROR error somewhere instead.

react/features/base/lib-jitsi-meet/reducer.js

         case LIB_INIT_ERROR:
             return {
                 ...state,
-                initializationError: action.lib.error,
+                initializationError: action.error,
                 initialized: false
             };