Stop exposing mapper in MapperContext

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

@@ -45,7 +45,7 @@ namespace Umbraco.Web.Models.Mapping
             if (!(target is List<Language> list))
                 throw new NotSupportedException($"{nameof(target)} must be a List<Language>.");
 
-            var temp = source.Select(context.Mapper.Map<ILanguage, Language>).ToList();
+            var temp = source.Select(context.Map<ILanguage, Language>).ToList();
 
             //Put the default language first in the list & then sort rest by a-z
             var defaultLang = temp.SingleOrDefault(x => x.IsDefault);