fix: prevent JSONBigInt parsing error on non-string data (#6891)

* Initial plan

* Fix json-bigint serialization error when data is not a string

Co-authored-by: likui628 <90845831+likui628@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: likui628 <90845831+likui628@users.noreply.github.com>

Author: Copilot

playground/src/api/request.ts

@@ -29,11 +29,15 @@ function createRequestClient(baseURL: string, options?: RequestClientOptions) {
     baseURL,
     transformResponse: (data: any, header: AxiosResponseHeaders) => {
       // storeAsString指示将BigInt存储为字符串，设为false则会存储为内置的BigInt类型
-      return header.getContentType()?.toString().includes('application/json')
-        ? cloneDeep(
-            JSONBigInt({ storeAsString: true, strict: true }).parse(data),
-          )
-        : data;
+      if (
+        header.getContentType()?.toString().includes('application/json') &&
+        typeof data === 'string'
+      ) {
+        return cloneDeep(
+          JSONBigInt({ storeAsString: true, strict: true }).parse(data),
+        );
+      }
+      return data;
     },
   });