Adds 'VariesByCulture` property to ContentItemBasic model & its mapping - so that the GetChildren API call for list view can know if each child item varies by culture or not

src/Umbraco.Web/Models/ContentEditing/ContentItemBasic.cs

@@ -55,6 +55,9 @@ namespace Umbraco.Web.Models.ContentEditing
         [JsonConverter(typeof(StringEnumConverter))]
         public ContentSavedState? State { get; set; }
 
+        [DataMember(Name = "variesByCulture")]
+        public bool VariesByCulture { get; set; }
+
         protected bool Equals(ContentItemBasic other)
         {
             return Id == other.Id;

src/Umbraco.Web/Models/Mapping/ContentMapperProfile.cs

@@ -82,7 +82,8 @@ namespace Umbraco.Web.Models.Mapping
                 .ForMember(dest => dest.AdditionalData, opt => opt.Ignore())
                 .ForMember(dest => dest.UpdateDate, opt => opt.ResolveUsing<UpdateDateResolver>())
                 .ForMember(dest => dest.Name, opt => opt.ResolveUsing<NameResolver>())
-                .ForMember(dest => dest.State, opt => opt.ResolveUsing<ContentBasicSavedStateResolver<ContentPropertyBasic>>());
+                .ForMember(dest => dest.State, opt => opt.ResolveUsing<ContentBasicSavedStateResolver<ContentPropertyBasic>>())
+                .ForMember(dest => dest.VariesByCulture, opt => opt.MapFrom(src => src.ContentType.VariesByCulture()));
 
             //FROM IContent TO ContentPropertyCollectionDto
             //NOTE: the property mapping for cultures relies on a culture being set in the mapping context