Update dxgrid columns252

[Manuel-J-Sanchez]

Refactored the demo to use the simplified API according to Denis suggestion in Teams Thread

[humanarian]

The SortListViewControllerBase class is now abstract for no reason. Since deriving from it is no longer required, the class should be made non-abstract and renamed so it doesn't contain "Base" in its name - for example, SortListViewController.

[DevExpressExampleBot]

Please correct the project and update this pull request by pushing a new commit.

[PREPARATION ERROR]
	ERROR: 
Unhandled Exception: System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
   at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module)
   at System.Reflection.RuntimeModule.GetTypes()
   at System.Reflection.Assembly.GetTypes()
   at DevExpress.ProjectUpgrade.RegexHelp.MethodRegexBuilder.GetBuilderFactory(ELanguage language)
   at DevExpress.ProjectUpgrade.Updaters.XAFAddGlobalFeatureToggleWithBuilder..ctor(String updaterVersion)
   at DevExpress.ProjectUpgrade.GarbageAdder.Execute(FileUpdaterCollection fileUpdaters, ConversionParameters args, IFileSystem fileSystem)
   at DevExpress.ProjectUpgrade.FileProcessor..ctor(ConversionParameters args, IFileSystem fileSystem, IFileStateUserController fileStateUserController)
   at DevExpress.ProjectUpgrade.Program.Main(String[] args)
	OUTPUT: Project Converter (25.2.2.0)
The conversion is started

https://codecentralfarm.devexpress.devx/job/xaf-how-to-sort-a-listview-in-code_25.2.1+/8/console

[DevExpressExampleBot]

Please correct the project and update this pull request by pushing a new commit.

[BUILDING ERROR]
	OUTPUT: C:\Temp\9ff90ac6-4a75-4b89-b814-03b12b9ca5b3\tempTestingCS\EFCore\SortListViewEF\SortListViewEF.Module\Module.cs(22,56): error CS0234: The type or namespace name 'Objects' does not exist in the namespace 'DevExpress.ExpressApp' (are you missing an assembly reference?) [C:\Temp\9ff90ac6-4a75-4b89-b814-03b12b9ca5b3\tempTestingCS\EFCore\SortListViewEF\SortListViewEF.Module\SortListViewEF.Module.csproj]

https://codecentralfarm.devexpress.devx/job/xaf-how-to-sort-a-listview-in-code_25.2.1+/15/console

[DevExpressExampleBot]

Please correct the project and update this pull request by pushing a new commit.

[BUILDING ERROR]
	OUTPUT: C:\Temp\cd36b391-e9af-4f6c-9bda-4016aebd285c\tempTestingCS\EFCore\SortListViewEF\SortListViewEF.Module\Module.cs(22,56): error CS0234: The type or namespace name 'Objects' does not exist in the namespace 'DevExpress.ExpressApp' (are you missing an assembly reference?) [C:\Temp\cd36b391-e9af-4f6c-9bda-4016aebd285c\tempTestingCS\EFCore\SortListViewEF\SortListViewEF.Module\SortListViewEF.Module.csproj]

https://codecentralfarm.devexpress.devx/job/xaf-how-to-sort-a-listview-in-code_25.2.1+/16/console