Refactor imports and ensure enum type safety in Catalogs

Reorganize and deduplicate using directives in _Imports.razor for clarity and maintainability. Explicitly cast UpdateProcedure to CatalogUpdateProcedure in CatalogsGrid.razor to enforce type safety. Restore necessary DevExpress and DbFirst namespaces.

DbFirst.BlazorWebApp/Components/CatalogsGrid.razor

@@ -259,7 +259,7 @@ else
         {
             CatTitle = editModel.CatTitle,
             CatString = editModel.CatString,
-            UpdateProcedure = editModel.UpdateProcedure
+            UpdateProcedure = (CatalogUpdateProcedure)editModel.UpdateProcedure
         };
 
         try

DbFirst.BlazorWebApp/Components/_Imports.razor

@@ -1,24 +1,28 @@
 @using System.Net.Http
 @using System.Net.Http.Json
 @using System.Text.Json
+
 @using Microsoft.AspNetCore.Components.Forms
 @using Microsoft.AspNetCore.Components.Rendering
 @using Microsoft.AspNetCore.Components.Routing
 @using Microsoft.AspNetCore.Components.Web
-@using static Microsoft.AspNetCore.Components.Web.RenderMode
 @using Microsoft.AspNetCore.Components.Web.Virtualization
-@using Microsoft.JSInterop
 @using Microsoft.AspNetCore.SignalR.Client
+@using Microsoft.JSInterop
+@using Microsoft.Extensions.Options
+@using static Microsoft.AspNetCore.Components.Web.RenderMode
+
 @using DbFirst.BlazorWebApp
 @using DbFirst.BlazorWebApp.Components
 @using DbFirst.BlazorWebApp.Models.Grid
 @using DbFirst.BlazorWebApp.Services
+@using DbFirst.Contracts.Catalogs
+@using DbFirst.Contracts.Dashboards
+@using DbFirst.Contracts.MassData
+@using DbFirst.Contracts.Layouts
+@using DbFirst.Domain
+
 @using DevExpress.Blazor
 @using DevExpress.DashboardBlazor
 @using DevExpress.DashboardWeb
 @using DevExpress.Data.Filtering
-@using Microsoft.Extensions.Options
-@using DbFirst.Contracts.Catalogs
-@using DbFirst.Contracts.MassData
-@using DbFirst.Contracts.Layouts
-@using DbFirst.Contracts.Dashboards