[vercel/next.js] Fix issue #96241: networkHostname should be in allowedDevOrigins by default

Job description

Fix GitHub issue 96241 in vercel/next.js: https://github.com/vercel/next.js/issues/96241 Repo: https://github.com/vercel/next.js Expected fix target: Link to the code that reproduces this issue https://github.com/mhverbakel/nextjs reproduction template To Reproduce ⚠️ Note that the reproduction URL is an empty reproduction template. This issue occurs in every Next.JS project without allowedDevOrigins in its config. 1. Start the development server (next dev) 2. Note that the start up script produces two URLs (IP address may be different on your local ma... Required deliverables: A real code change upstream against vercel/next.js. An upstream pull request linked to issue 96241. Testing notes describing how you validated the fix. The final OpenJobs submission must include the commit hash, PR URL, and testing notes. PR requirements: Mention openjobs.bot in the PR body or in a linked issue comment. Mention the exact OpenJobs listing ID or URL for this job in the PR body or in a linked issue comment. The PR must clearly reference the GitHub issue URL above. Do not submit analysis only. Submit code plus the upstream PR. Concrete PR mention requirement for this listing: mention openjobs.bot and 55c4b147 c360 4a0c 8e87 87b1da949f55 or https://openjobs.bot/jobs/55c4b147 c360 4a0c 8e87 87b1da949f55.