Reintroduced a lot of extension methods as obsolete to avoid breaking change

[bergmania]

Description

Reintroduces the extensions that is possible on PublishedContentExtensions, but as obsolete.

To avoid unnecessary breaking changes

Appendix

I tested with the following render controller and a doc type called Root.

using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.ViewEngines;
using Umbraco.Cms.Core.Models.PublishedContent;
using Umbraco.Cms.Core.Routing;
using Umbraco.Cms.Core.Services;
using Umbraco.Cms.Core.Web;
using Umbraco.Cms.Web.Common.Controllers;

namespace Umbraco.Cms.Web.UI;


public class RootController : RenderController
{
    private readonly IVariationContextAccessor _variationContextAccessor;
    private readonly IContentTypeService _contentTypeService;
    private readonly IMediaTypeService _mediaTypeService;
    private readonly IMemberTypeService _memberTypeService;
    private readonly IPublishedUrlProvider _publishedUrlProvider;

    public RootController(
        ILogger<RootController> logger,
        ICompositeViewEngine compositeViewEngine,
        IUmbracoContextAccessor umbracoContextAccessor,
        IVariationContextAccessor variationContextAccessor,
        IContentTypeService contentTypeService,
        IMediaTypeService mediaTypeService,
        IMemberTypeService memberTypeService,
        IPublishedUrlProvider publishedUrlProvider)
        : base(logger, compositeViewEngine, umbracoContextAccessor)
    {
        _variationContextAccessor = variationContextAccessor;
        _contentTypeService = contentTypeService;
        _mediaTypeService = mediaTypeService;
        _memberTypeService = memberTypeService;
        _publishedUrlProvider = publishedUrlProvider;
    }

    public override IActionResult Index()
    {
        if (CurrentPage is null)
        {
            return NotFound();
        }
#pragma warning disable CS0618 // Type or member is obsolete
        _ = CurrentPage.Ancestor();
        _ = CurrentPage.Ancestor(1);
        _ = CurrentPage.Ancestor("root");
        _ = CurrentPage.Ancestor<IPublishedContent>();
        _ = CurrentPage.Ancestor<IPublishedContent>(1);
        _ = CurrentPage.AncestorOrSelf();
        _ = CurrentPage.AncestorOrSelf(1);
        _ = CurrentPage.AncestorOrSelf("root");
        _ = CurrentPage.AncestorOrSelf<IPublishedContent>();
        _ = CurrentPage.AncestorOrSelf<IPublishedContent>(1);
        _ = CurrentPage.Ancestors();
        _ = CurrentPage.Ancestors(1);
        _ = CurrentPage.Ancestors("root");
        _ = CurrentPage.Ancestors<IPublishedContent>();
        _ = CurrentPage.Ancestors<IPublishedContent>(1);
        _ = CurrentPage.AncestorsOrSelf();
        _ = CurrentPage.AncestorsOrSelf(1);
        _ = CurrentPage.AncestorsOrSelf("root");
        _ = CurrentPage.AncestorsOrSelf(true, content => true);
        _ = CurrentPage.AncestorsOrSelf<IPublishedContent>();
        _ = CurrentPage.AncestorsOrSelf<IPublishedContent>(1);
        _ = CurrentPage.Breadcrumbs();
        _ = CurrentPage.Breadcrumbs(false);
        _ = CurrentPage.Breadcrumbs(1);
        _ = CurrentPage.Breadcrumbs(1, false);
        _ = CurrentPage.Breadcrumbs<IPublishedContent>();
        _ = CurrentPage.Breadcrumbs<IPublishedContent>(false);
        _ = CurrentPage.Children(_variationContextAccessor, "da");
        _ = CurrentPage.Children(_variationContextAccessor, content => true, "da");
        _ = CurrentPage.Children<IPublishedContent>(_variationContextAccessor, "da");
        _ = CurrentPage.ChildrenOfType(_variationContextAccessor, "root", "da");
        _ = CurrentPage.ChildrenAsTable(_variationContextAccessor, _contentTypeService, _mediaTypeService, _memberTypeService, _publishedUrlProvider);
        _ = CurrentPage.DescendantsOrSelfOfType(_variationContextAccessor, "root", "da");
        _ = CurrentPage.Children().DescendantsOrSelfOfType(_variationContextAccessor, "root", "da");
        _ = CurrentPage.Children().DescendantsOrSelf<IPublishedContent>(_variationContextAccessor, "da");
        _ = CurrentPage.Descendants(_variationContextAccessor, "da");
        _ = CurrentPage.Descendants(_variationContextAccessor, 1,"da");
        _ = CurrentPage.DescendantsOfType(_variationContextAccessor, "root", "da");
        _ = CurrentPage.DescendantsOfType(_variationContextAccessor, "root", "da");
        _ = CurrentPage.Descendants<IPublishedContent>(_variationContextAccessor, "da");
        _ = CurrentPage.Descendants<IPublishedContent>(_variationContextAccessor, 1,"da");
        _ = CurrentPage.DescendantsOrSelf(_variationContextAccessor, "da");
        _ = CurrentPage.DescendantsOrSelf(_variationContextAccessor, 1,"da");
        _ = CurrentPage.DescendantsOrSelfOfType(_variationContextAccessor, "root", "da");
        _ = CurrentPage.DescendantsOrSelfOfType(_variationContextAccessor, "root", "da");
        _ = CurrentPage.DescendantsOrSelf<IPublishedContent>(_variationContextAccessor, "da");
        _ = CurrentPage.DescendantsOrSelf<IPublishedContent>(_variationContextAccessor, 1,"da");
        _ = CurrentPage.Descendant(_variationContextAccessor, "da");
        _ = CurrentPage.Descendant(_variationContextAccessor, 1,"da");
        _ = CurrentPage.DescendantOfType(_variationContextAccessor, "root", "da");
        _ = CurrentPage.DescendantOfType(_variationContextAccessor, "root", "da");
        _ = CurrentPage.Descendant<IPublishedContent>(_variationContextAccessor, "da");
        _ = CurrentPage.Descendant<IPublishedContent>(_variationContextAccessor, 1,"da");
        _ = CurrentPage.DescendantOrSelf(_variationContextAccessor, "da");
        _ = CurrentPage.DescendantOrSelf(_variationContextAccessor, 1,"da");
        _ = CurrentPage.DescendantOrSelfOfType(_variationContextAccessor, "root", "da");
        _ = CurrentPage.DescendantOrSelfOfType(_variationContextAccessor, "root", "da");
        _ = CurrentPage.DescendantOrSelf<IPublishedContent>(_variationContextAccessor, "da");
        _ = CurrentPage.DescendantOrSelf<IPublishedContent>(_variationContextAccessor, 1,"da");
        _ = CurrentPage.FirstChild(_variationContextAccessor,"da");
        _ = CurrentPage.FirstChildOfType(_variationContextAccessor, "root","da");
        _ = CurrentPage.FirstChild<IPublishedContent>(_variationContextAccessor);
        _ = CurrentPage.FirstChild<IPublishedContent>(_variationContextAccessor, content => true);
        _ = CurrentPage.Parent<IPublishedContent>();
        _ = CurrentPage.Root();
        _ = CurrentPage.Root<IPublishedContent>();
        _ = CurrentPage.Siblings(_variationContextAccessor, "da");
        _ = CurrentPage.Siblings<IPublishedContent>(_variationContextAccessor, "da");
        _ = CurrentPage.SiblingsOfType(_variationContextAccessor, "root", "da");
        _ = CurrentPage.SiblingsAndSelf(_variationContextAccessor, "da");
        _ = CurrentPage.SiblingsAndSelf<IPublishedContent>(_variationContextAccessor, "da");
        _ = CurrentPage.SiblingsAndSelfOfType(_variationContextAccessor, "root", "da");
#pragma warning restore CS0618 // Type or member is obsolete

        // return a 'model' to the selected template/view for this page.
        return CurrentTemplate(CurrentPage);
    }
}