fix: unblock auth identity compat backfill migration

backend/internal/repository/migrations_runner.go

@@ -73,6 +73,12 @@ var migrationChecksumCompatibilityRules = map[string]migrationChecksumCompatibil
 			"222b4a09c797c22e5922b6b172327c824f5463aaa8760e4f621bc5c22e2be0f3": {},
 		},
 	},
+	"109_auth_identity_compat_backfill.sql": {
+		fileChecksum: "551e498aa5616d2d91096e9d72cf9fb36e418ee22eacc557f8811cadbc9e20ee",
+		acceptedDBChecksum: map[string]struct{}{
+			"2b380305e73ff0c13aa8c811e45897f2b36ca4a438f7b3e8f98e19ecb6bae0b3": {},
+		},
+	},
 }
 
 // ApplyMigrations 将嵌入的 SQL 迁移文件应用到指定的数据库。