Update MediaController.cs

Fix for issue https://github.com/OrchardCMS/Orchard/issues/5275.  The fix is to return the FolderPath element in the response to the media search request so that the folderPath check in the javascript code succeeds.

src/Orchard.Web/Modules/Orchard.Search/Controllers/MediaController.cs

@@ -59,10 +59,11 @@ namespace Orchard.Search.Controllers {
 
             var viewModel = new MediaManagerMediaItemsViewModel {
                 MediaItems = mediaItems,
-                MediaItemsCount = mediaPartsCount
+                MediaItemsCount = mediaPartsCount,
+                FolderPath = folderPath
             };
 
             return View(viewModel);
         }
     }
-}
+}