Rename select-all helper and avoid shift tracking

ErsatzTV.Core.Tests/Pages/MediaCardSelectionHelperTests.cs

@@ -18,7 +18,7 @@ public class MediaCardSelectionHelperTests
         var first = new MediaCardViewModel(2, "First", "Sub", "First", "", Core.Domain.MediaItemState.Normal, false);
         var second = new MediaCardViewModel(3, "Second", "Sub", "Second", "", Core.Domain.MediaItemState.Normal, false);
 
-        MediaCardViewModel last = MultiSelectBase<Search>.SelectAllPageItems(selected, new[] { first, second });
+        MediaCardViewModel last = MultiSelectBase<Search>.ResetSelectionWithCards(selected, new[] { first, second });
 
         selected.ShouldBe(new[] { first, second }, ignoreOrder: true);
         last.ShouldBe(second);
@@ -30,7 +30,7 @@ public class MediaCardSelectionHelperTests
         var existingCard = new MediaCardViewModel(1, "Existing", "Sub", "Existing", "", Core.Domain.MediaItemState.Normal, false);
         var selected = new HashSet<MediaCardViewModel> { existingCard };
 
-        MediaCardViewModel last = MultiSelectBase<Search>.SelectAllPageItems(selected, []);
+        MediaCardViewModel last = MultiSelectBase<Search>.ResetSelectionWithCards(selected, []);
 
         selected.ShouldBeEmpty();
         last.ShouldBeNull();

ErsatzTV/Pages/MultiSelectBase.cs

@@ -42,8 +42,7 @@ public class MultiSelectBase<T> : FragmentNavigationBase
 
     protected void SelectAllPageItems(IEnumerable<MediaCardViewModel> cards)
     {
-        MediaCardViewModel lastSelected = SelectAllPageItems(SelectedItems, cards);
-        _recentlySelected = Optional(lastSelected);
+        ResetSelectionWithCards(SelectedItems, cards);
         StateHasChanged();
     }
 
@@ -249,7 +248,7 @@ public class MultiSelectBase<T> : FragmentNavigationBase
         }
     }
 
-    internal static MediaCardViewModel SelectAllPageItems(
+    internal static MediaCardViewModel ResetSelectionWithCards(
         ISet<MediaCardViewModel> selectedItems,
         IEnumerable<MediaCardViewModel> cards)
     {