fix(rn, recording) adds _toggleScreenshotCapture function to AbstractStartRecordingDialog

Importing the entire feature triggers web UI imports.

react/features/base/media/middleware.js

@@ -13,7 +13,7 @@ import {
     showWarningNotification
 } from '../../notifications';
 import { isForceMuted } from '../../participants-pane/functions';
-import { isScreenMediaShared } from '../../screen-share';
+import { isScreenMediaShared } from '../../screen-share/functions';
 import { SET_AUDIO_ONLY, setAudioOnly } from '../audio-only';
 import { isRoomValid, SET_ROOM } from '../conference';
 import { getLocalParticipant } from '../participants';

react/features/recording/components/Recording/AbstractStartRecordingDialog.js

@@ -339,11 +339,17 @@ class AbstractStartRecordingDialog extends Component<Props, State> {
         return true;
     }
 
-    /**
-     * To be overwritten by web component.
-     */
     _toggleScreenshotCapture:() => void;
 
+    /**
+     * Toggles screenshot capture feature.
+     *
+     * @returns {void}
+     */
+    _toggleScreenshotCapture() {
+        // To be implemented by subclass.
+    }
+
     /**
      * Renders the platform specific dialog content.
      *