settings: fix loading disableCallIntegration

react/features/base/settings/middleware.js

 // @flow
 
+import { APP_WILL_MOUNT } from '../app';
 import { setAudioOnly } from '../audio-only';
 import { getLocalParticipant, participantUpdated } from '../participants';
 import { MiddlewareRegistry } from '../redux';
     const result = next(action);
 
     switch (action.type) {
+    case APP_WILL_MOUNT:
+        _initializeCallIntegration(store);
+        break;
     case SETTINGS_UPDATED:
         _maybeHandleCallIntegrationChange(action);
         _maybeSetAudioOnly(store, action);
         _updateLocalParticipant(store, action);
+        break;
     }
 
     return result;
 });
 
+/**
+ * Initializes the audio device handler based on the `disableCallIntegration` setting.
+ *
+ * @param {Store} store - The redux store.
+ * @private
+ * @returns {void}
+ */
+function _initializeCallIntegration({ getState }) {
+    const { disableCallIntegration } = getState()['features/base/settings'];
+
+    if (typeof disableCallIntegration === 'boolean') {
+        handleCallIntegrationChange(disableCallIntegration);
+    }
+}
+
 /**
  * Maps the settings field names to participant names where they don't match.
  * Currently there is only one such field, but may be extended in the future.
 }
 
 /**
- * Updates {@code startAudioOnly} flag if it's updated in the settings.
+ * Handles a change in the `disableCallIntegration` setting.
  *
  * @param {Object} action - The redux action.
  * @private