`workers-ai-provider` does not support `ai-gateway` even though it's stated in the `README.md` it does

[leodalcin]

I've done some local tests and found out calls done through workers-ai-provider do not use the gateway config option.

As you can see the library states gateways are supported here: https://github.com/cloudflare/ai/tree/main/packages/workers-ai-provider#ai-gateway

It seems like the gateway config is ignored in this line:
https://github.com/cloudflare/ai/blob/main/packages/workers-ai-provider/src/utils.ts#L111

This results in no observability through the AI gateway.

I've tested this using AI SDK in conjunction with the provider library as follows:

import { embedMany } from 'ai';
import { createWorkersAI } from 'workers-ai-provider';

const workersai = createWorkersAI({
    accountId: 'id',
    apiKey: 'key',
    gateway: { id: 'gateway-name' }
  });
const embeddingModel = workersai.embedding('embedding model name', { gateway: { id: 'gateway-name' } });
await embedMany({
  model: embeddingModel,
  values: texts,
});

[threepointone]

@vaibhavshn

[kentonv]

FWIW it definitely works for me when using a binding:

createWorkersAI({
  binding: env.WORKERS_AI,
  gateway: { id: 'gateway-name', metadata },
})

But I haven't tried with accountId + apiKey.