withSentry wrapper causes stalled request warning with async request handlers in Next.JS

[maurocolella]

Environment

self-hosted (onpremise deployment)

Version

^6.12.0

Steps to Reproduce

1. Create a starter Next.JS project with API routes. https://nextjs.org/docs/api-routes/introduction
2. Install and configure @sentry/nextjs
3. Create async route handlers. Ie. export default withSentry(async (req, res) => {
4. Implement any route responder, ie. res.status(200).end()
5. Test the route. For example, create a button that issues an api call.

Expected Result

The route responds and no error is raised.

Actual Result

API resolved without sending a response for /api/<endpoint>, this may result in stalled requests.

[kamilogorek]

Duplicate of #3852 with possible workaround #3852 (comment)