Fixed an issue where the add item button was disabled in empty bundles (#7569)

Author: d2dyno1

src/Files/ViewModels/Widgets/Bundles/BundleContainerViewModel.cs

@@ -78,7 +78,7 @@ public bool NoBundleContentsTextLoad
             set => SetProperty(ref noBundleContentsTextLoad, value);
         }
 
-        private bool isAddItemOptionEnabled;
+        private bool isAddItemOptionEnabled = true;
 
         public bool IsAddItemOptionEnabled
         {
@@ -493,6 +493,7 @@ public async Task<bool> AddBundleItem(BundleItemViewModel bundleItem)
                 Contents.Add(bundleItem);
                 itemAddedInternally = false;
                 NoBundleContentsTextLoad = false;
+                IsAddItemOptionEnabled = Contents.Count < Constants.Widgets.Bundles.MaxAmountOfItemsPerBundle;
                 await bundleItem.UpdateIcon();
                 return true;
             }
@@ -520,11 +521,6 @@ public async Task<BundleContainerViewModel> SetBundleItems(IEnumerable<BundleIte
 
             await AddBundleItems(items);
 
-            if (Contents.Count > 0)
-            {
-                NoBundleContentsTextLoad = false;
-            }
-
             return this;
         }