Fixed an issue where items wouldn't load in Box drive (#8808)

Author: gave92

src/Files.Uwp/ViewModels/ItemViewModel.cs

@@ -1297,6 +1297,7 @@ private async Task RapidAddItemsToCollection(string path, LibraryItem library =
                         WatchForStorageFolderChanges(currentStorageFolder?.Folder);
                         break;
 
+                    case 2: // Do no watch for changes in Box Drive folder to avoid constant refresh (#7428)
                     case -1: // Enumeration failed
                     default:
                         break;
@@ -1488,8 +1489,9 @@ await CoreApplication.MainView.DispatcherQueue.EnqueueAsync(async () =>
         public async Task<int> EnumerateItemsFromStandardFolderAsync(string path, Type sourcePageType, CancellationToken cancellationToken, LibraryItem library = null)
         {
             // Flag to use FindFirstFileExFromApp or StorageFolder enumeration
-            bool enumFromStorageFolder =
-                path == App.CloudDrivesManager.Drives.FirstOrDefault(x => x.Text == "Box")?.Path?.TrimEnd('\\'); // Use storage folder for Box Drive (#4629)
+            var isBoxFolder = App.CloudDrivesManager.Drives.FirstOrDefault(x => x.Text == "Box")?.Path?.TrimEnd('\\') is string boxFolder ? 
+                path.StartsWith(boxFolder) : false;
+            bool enumFromStorageFolder = isBoxFolder; // Use storage folder for Box Drive (#4629)
 
             BaseStorageFolder rootFolder = null;
 
@@ -1580,7 +1582,7 @@ await DialogDisplayHelper.ShowDialogAsync(
                 }
                 CurrentFolder = currentFolder;
                 await EnumFromStorageFolderAsync(path, currentFolder, rootFolder, currentStorageFolder, sourcePageType, cancellationToken);
-                return 1;
+                return isBoxFolder ? 2 : 1; // Workaround for #7428
             }
             else
             {