Avoid sending update/delete release notice when it is draft (#29008)

Fix #27157

services/release/release.go

@@ -291,15 +291,13 @@ func UpdateRelease(ctx context.Context, doer *user_model.User, gitRepo *git.Repo
 		}
 	}
 
+	if !rel.IsDraft {
 		if !isCreated {
 			notify_service.UpdateRelease(gitRepo.Ctx, doer, rel)
 			return nil
 		}
-
-	if !rel.IsDraft {
 		notify_service.NewRelease(gitRepo.Ctx, rel)
 	}
-
 	return nil
 }
 
@@ -368,8 +366,9 @@ func DeleteReleaseByID(ctx context.Context, repo *repo_model.Repository, rel *re
 		}
 	}
 
+	if !rel.IsDraft {
 		notify_service.DeleteRelease(ctx, doer, rel)
-
+	}
 	return nil
 }