update blog post when it's status changed

It is required for MongoDb.
It is requested in https://github.com/abpframework/abp/pull/12073#discussion_r835100870

modules/cms-kit/src/Volo.CmsKit.Admin.Application/Volo/CmsKit/Admin/Blogs/BlogPostAdminAppService.cs

@@ -119,6 +119,7 @@ public class BlogPostAdminAppService : CmsKitAppServiceBase, IBlogPostAdminAppSe
     {
         var blogPost = await BlogPostRepository.GetAsync(id);
         blogPost.SetPublished();
+        await BlogPostRepository.UpdateAsync(blogPost);
     }
 
     [Authorize(CmsKitAdminPermissions.BlogPosts.Update)]
@@ -126,6 +127,7 @@ public class BlogPostAdminAppService : CmsKitAppServiceBase, IBlogPostAdminAppSe
     {
         var blogPost = await BlogPostRepository.GetAsync(id);
         blogPost.SetDraft();
+        await BlogPostRepository.UpdateAsync(blogPost);
     }
 
     [Authorize(CmsKitAdminPermissions.BlogPosts.Create)]