[FA-misc] Saga seems to work, fixed a UserNovelDataService bug

FictionArchive.Service.UserNovelDataService/Consumers/ChapterCreatedConsumer.cs

@@ -35,7 +35,7 @@ public class ChapterCreatedConsumer : IConsumer<IChapterCreated>
         var volumeExists = await _dbContext.Volumes.AnyAsync(v => v.Id == message.VolumeId);
         if (!volumeExists)
         {
-            var volume = new Volume { Id = message.VolumeId };
+            var volume = new Volume { Id = message.VolumeId, NovelId = message.NovelId };
             _dbContext.Volumes.Add(volume);
         }
 
@@ -47,7 +47,7 @@ public class ChapterCreatedConsumer : IConsumer<IChapterCreated>
             return;
         }
 
-        var chapter = new Chapter { Id = message.ChapterId };
+        var chapter = new Chapter { Id = message.ChapterId, VolumeId = message.VolumeId };
         _dbContext.Chapters.Add(chapter);
         await _dbContext.SaveChangesAsync();