feat: Adds id to the notifications so we can check for them in the integration tests.

react/features/notifications/components/AbstractNotification.js

         return descriptionArray;
     }
 
+    _getDescriptionKey: () => string
+
+    /**
+     * Returns the description key that was used if any.
+     *
+     * @protected
+     * @returns {string}
+     */
+    _getDescriptionKey() {
+        return this.props.descriptionKey;
+    }
+
     _onDismissed: () => void;
 
     /**

react/features/notifications/components/web/Notification.js

 
     _getDescription: () => Array<string>
 
+    _getDescriptionKey: () => string
+
     _onDismissed: () => void;
 
     /**
      * @returns {ReactElement}
      */
     _renderDescription() {
+        const description = this._getDescription();
+
+        // the id is used for testing the UI
         return (
-            <div>
-                {
-                    this._getDescription()
-                }
+            <div id = { this._getDescriptionKey() || description || this.props.titleKey || this.props.title } >
+                { description }
             </div>
         );
     }