[RN] Adjust Conference for the reduced UI mode (Coding style)

react/features/conference/components/Conference.native.js

     _onHardwareBackPress: Function,
 
     /**
-     * The indicator which determines if we are in reduced UI mode.
+     * The indicator which determines whether the UI is reduced (to accommodate
+     * smaller display areas).
      *
      * @private
      */
                 {/*
                   * If there is a ringing call, show the callee's info.
                   */
-                    !this.props._reducedUI && <CalleeInfoContainer />
+                    this.props._reducedUI || <CalleeInfoContainer />
                 }
 
                 {/*
                 {/*
                   * The dialogs are in the topmost stacking layers.
                   */
-                    !this.props._reducedUI && <DialogContainer />
+                    this.props._reducedUI || <DialogContainer />
                 }
             </Container>
         );
  * @private
  * @returns {{
  *     _connecting: boolean,
+ *     _reducedUI: boolean,
  *     _toolboxVisible: boolean
  * }}
  */
         _connecting: Boolean(connecting_),
 
         /**
-         * The indicator which determines if we are in reduced UI mode.
+         * The indicator which determines whether the UI is reduced (to
+         * accommodate smaller display areas).
          *
          * @private
          * @type {boolean}

react/features/conference/index.js

-import './route';
-
 export * from './components';
 
 import './middleware';
+import './route';

react/features/conference/middleware.js

 import { setFilmstripEnabled } from '../filmstrip';
 import { setToolboxEnabled } from '../toolbox';
 
-MiddlewareRegistry.register(({ dispatch, getState }) => next => action => {
+MiddlewareRegistry.register(store => next => action => {
     const result = next(action);
 
     switch (action.type) {
     case CONFERENCE_JOINED:
     case SET_REDUCED_UI: {
+        const { dispatch, getState } = store;
         const state = getState();
         const { audioOnly } = state['features/base/conference'];
         const { reducedUI } = state['features/base/responsive-ui'];
 
         // XXX: Currently setting the received video quality will disable
         // audio-only mode if engaged, that's why we check for it here.
-        if (!audioOnly) {
-            dispatch(setReceiveVideoQuality(
+        audioOnly
+            || dispatch(
+                setReceiveVideoQuality(
                     reducedUI
                         ? VIDEO_QUALITY_LEVELS.LOW
                         : VIDEO_QUALITY_LEVELS.HIGH));
-        }
 
         break;
     }