Fix: network codes

src/config/schemas/pureChainSchema.ts

@@ -1,11 +1,12 @@
 import { z } from 'zod';
+import { networkCodes } from '../../constants';
 import { SupportedChainId } from '../../types';
 
 export const pureChainInfoPayloadSchema = z.object({
   chainId: z.nativeEnum(SupportedChainId),
   label: z.string(),
   shortName: z.string(),
-  code: z.string(),
+  code: z.enum(networkCodes),
   explorer: z.string(),
   rpc: z.string(),
   baseCurrencyName: z.string(),