[FA-misc] Fix an oversight in the update process

FictionArchive.Service.NovelService/Services/NovelUpdateService.cs

@@ -289,7 +289,8 @@ public class NovelUpdateService
             .Include(n => n.Description)
             .ThenInclude(lk => lk.Texts)
             .Include(n => n.Tags)
-            .Include(n => n.Chapters)
+            .Include(n => n.Chapters).ThenInclude(chapter => chapter.Body)
+            .ThenInclude(localizationKey => localizationKey.Texts)
             .Include(n => n.CoverImage)
             .FirstOrDefaultAsync(n =>
                 n.ExternalId == metadata.ExternalId &&