Fixed bug where deletes of artifact groupings would not cascade

OpenArchival.Blazor.AdminPages.Shared/AddGroupingDialog.razor

@@ -0,0 +1,41 @@
+@namespace OpenArchival.Blazor.AdminPages.Shared
+@using Microsoft.AspNetCore.Components.Web
+@using MudBlazor
+
+<MudDialog>
+    <TitleContent>
+        <MudText Typo="Typo.h6">Edit a Category</MudText>
+    </TitleContent>
+
+    <DialogContent>
+        <AddArchiveGroupingComponent 
+            Model="Model"
+            FormButtonsEnabled=false></AddArchiveGroupingComponent>
+    </DialogContent>
+
+    <DialogActions>
+        <MudButton OnClick="OnCancel">Cancel</MudButton>
+        <MudButton Color="Color.Primary" OnClick="OnSubmit">OK</MudButton>
+    </DialogActions>
+</MudDialog>
+
+@code {
+    [Parameter]
+    public required ArtifactGroupingValidationModel Model { get; set; }
+
+    [CascadingParameter]
+    IMudDialogInstance MudDialog { get; set; }
+
+    [Parameter]
+    public bool IsUpdate { get; set; } = false;
+
+
+    private void OnCancel(MouseEventArgs args)
+    {
+        MudDialog.Cancel();
+    }
+    private void OnSubmit(MouseEventArgs args)
+    {
+        MudDialog.Close(DialogResult.Ok(Model));
+    }
+}