Fix typegen watcher leak on dev restart

[markdalgleish]

If the dev server is restarted (e.g. when Vite config changes) the old file watcher is still hanging around, with the following showing up in the terminal: MaxListenersExceededWarning: Possible EventEmitter memory leak detected.

I've confirmed that when restarting the dev server, Vite calls the buildEnd hook, so to fix this we need to ensure the typegen watcher is cleaned up at the same time.

Note that this is a minimal fix that aims to maintain the current architecture as much as possible, but I think it'd be worth following up with making the typegen code accept a ConfigLoader so that it can be shared with the Vite plugin rather than having two instances of it.

[changeset-bot]

🦋 Changeset detected

Latest commit: c0a4a6e

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 10 packages

Name	Type
@react-router/dev	Patch
@react-router/fs-routes	Patch
@react-router/remix-routes-option-adapter	Patch
react-router	Patch
react-router-dom	Patch
@react-router/architect	Patch
@react-router/cloudflare	Patch
@react-router/express	Patch
@react-router/node	Patch
@react-router/serve	Patch

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