Product Recommendations SDK returns 403 error

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Expected behavior

it should return product data

### Actual behavior

Whenever I use the Product Recommendations SDK ping method, it shows a 403 error. I searched multiple documents; there is no reference to adding any other key or credentials-related information.
response : {
"status": 403,
"data": "{ \"error\": { \"code\": \"Forbidden\", \"message\": \"Client ID is missing\", \"details\": { \"error_code\": \"403000\" } } }\n"
}

### Steps to reproduce


### Environment

- Browser: Crome
- OS: linux

### Sample code

const client = new RecommendationsClient({
environmentId: "e0d84de8-2c34-4fa1-9f2f-8c3dda755dbb",
websiteCode: "base",
storeViewCode: "default",
storeCode: "main_website_store",
instanceId: "7d5096bd21e34459b47555f59f925401",
});

// Register pre-built recommendation unit
client.register({
name: "trending",
type: "trending",
// filters: "categories: (disposable)",
});
// Retrieve recommendations for all units
client.ping().then((e) => {
debugger;
/* response : { "status": 403, "data": "{ \"error\": { \"code\": \"Forbidden\", \"message\": \"Client ID is missing\",\"details\": { \"error_code\": \"403000\" } } }\n" */
}
});

### Logs

response : {
"status": 403,
"data": "{ \"error\": { \"code\": \"Forbidden\", \"message\": \"Client ID is missing\", \"details\": { \"error_code\": \"403000\" } } }\n"
}

Start with the supplied RecommendationsClient constructor and ping() call, then trace the request requirements for the Product Recommendations SDK. Compare the documented setup with the 403 response and determine whether the missing Client ID requires a documentation update or an SDK change; done means the cause and expected credential setup are verified.

Written by the indexing model from the issue text.