[REQUEST] support vercel edge functions by default

## What problem are you trying to solve?

support the [vercel edge runtime ](https://vercel.com/docs/concepts/functions/edge-functions/edge-runtime)for dataloaders without workaround. see discussion here https://github.com/vercel/next.js/issues/44711 (edge does not support `process.nextTick`, which is being checked in the `Dataloader` package)

right now, you have to pass in the `batchScheduleFn` with a setTimeout to the DataLoader to make the package work on the edge runtime like so
```
batchScheduleFn: (cb) => setTimeout(cb, 0),
```
but this might not be ideal? not totally sure what happens in this case, I would just worry about adding latency or breaking the batching with the setTimeout instead of relying on the default behavior (batching per execution context)

## Describe the solution you'd like

Dataloader should work in the edge runtime without having to pass in a `setTimeout`

## Describe alternatives you've considered

using the setTimeout workaround

## Additional context

nice to support edge functions so that you can have zero cold start graphql functions in a serverless environment