fix: add json type to flagDataTypeMap in feature flag factory

Author: dtoxvanilla1991

src/frontend/factories/feature-flag-factory.ts

@@ -1,12 +1,18 @@
 import { config } from "../../config";
-import { KindeFlag, KindeFlagRaw, KindeFlagTypeCode, KindeFlagTypeValue } from "../../types";
+import {
+  KindeFlag,
+  KindeFlagRaw,
+  KindeFlagTypeCode,
+  KindeFlagTypeValue,
+} from "../../types";
 import { KindeFeatureFlags } from "../types";
 
 /** @type {Record<KindeFlagTypeCode, KindeFlagTypeValue>} */
 export const flagDataTypeMap: Record<KindeFlagTypeCode, KindeFlagTypeValue> = {
   s: "string",
   i: "integer",
   b: "boolean",
+  j: "json",
 };
 
 export const getFlagFactory = (featureFlags: KindeFeatureFlags) => {