Update(was): sync with the new handler API

See opennextjs/opennextjs-aws#733

Author: vicb

pages/aws/config/custom_overrides.mdx

@@ -250,7 +250,7 @@ const handler: WrapperHandler =
       },
     };
 
-    const response = await handler(internalEvent, fakeStream);
+    const response = await handler(internalEvent, { streamCreator: fakeStream });
     response.headers['x-wrapper'] = 'hi'
 
     return converter.convertTo(response, event);

pages/aws/config/overrides/wrapper.mdx

@@ -6,7 +6,7 @@ Couple of things to note :
 - If you want to use streaming (for the `node` runtime of next), you'll need to create a `StreamCreator` and pass it to the `handler`. You can find some example in the [node](https://github.com/opennextjs/opennextjs-aws/blob/main/packages/open-next/src/overrides/wrappers/node.ts) or [aws-lambda-streaming](https://github.com/opennextjs/opennextjs-aws/blob/main/packages/open-next/src/overrides/wrappers/aws-lambda-streaming.ts) wrapper.
 - If you don't use streaming (like in the default `aws-lambda` wrapper), you may still need to provide a fake `StreamCreator` to the `handler` to avoid a weird issue with Node itself (see [here](https://github.com/opennextjs/opennextjs-aws/blob/f685ddea8f8a5c82591dc02713aff7138f2d9896/packages/open-next/src/overrides/wrappers/aws-lambda.ts#L49-L65) for an example and a more thorough explanation).
 - If you use the `edge` runtime of Next (either for the external middleware or for an `edge` route or page), you don't need the `StreamCreator` at all.
-- If you are in a serverless environment and it supports `waitUntil`, you should define it here(see [here](https://github.com/opennextjs/opennextjs-aws/blob/f685ddea8f8a5c82591dc02713aff7138f2d9896/packages/open-next/src/overrides/wrappers/cloudflare.ts#L29)). This might not be necessary depending on where you run it (for example the `aws-lambda-streaming` or the `node` wrapper doesn't need it.)
+- If you are in a serverless environment and it supports `waitUntil`, you should pass it to the handler as it is done in the [cloudflare-edge wrapper](https://github.com/opennextjs/opennextjs-aws/blob/b59027a5899d25dd5263d1a272b33ec23fb683d3/packages/open-next/src/overrides/wrappers/cloudflare-edge.ts#L65-L67). This might not be necessary depending on where you run it (for example the `aws-lambda-streaming` or the `node` wrapper doesn't need it.)
 
 
 ## Included Wrappers