fix #4855 - dropping required column causes issue on SQLite

Oqtane.Shared/Models/Language.cs

@@ -29,9 +29,10 @@ namespace Oqtane.Models
         /// </summary>
         public bool IsDefault { get; set; }
 
-        [NotMapped]
         /// <summary>
         /// Language Name - corresponds to <see cref="Culture.DisplayName"/>, _not_ <see cref="Culture.Name"/>
+        /// Note that this property still exists in the database because columns cannot be dropped in SQLite
+        /// Therefore the property must be retained/mapped even though the framework populates it from the Culture API
         /// </summary>
         public string Name { get; set; }