Make uWebSockets.js required for node-serve

[mjackson]

node-serve imports uWebSockets.js at module load and serve() creates a uWebSockets app directly, so the transport is required for the package to work.

• Moves uWebSockets.js from optionalDependencies to dependencies for @remix-run/node-serve
• Updates the lockfile so installs treat the native transport as required
• Removes the optional-dependency install warning from the README
• Adds a patch change file for the corrected install behavior

[github-actions]

Preview Build Available

A preview build has been created for this PR. You can install it using:

pnpm install "remix-run/remix#preview/pr-11311&path:packages/remix"

This preview build will be updated automatically as you push new commits.

[github-actions]

The preview branch preview/pr-11311 has been deleted now that this PR is merged/closed.