Skip unused routes.ts eval before Vite build

[markdalgleish]

Fixes #13078

We currently load the React Router config before starting the Vite build, but this is only done to load the future flags so we know whether to use the Vite Environment API powered build process or not. However, our config loading logic also evaluates routes.ts.

As a slight performance improvement and to keep the order of operations as similar as possible to react-router dev and vite build, we now skip evaluating routes.ts when loading future flags before the Vite build is started.

[changeset-bot]

🦋 Changeset detected

Latest commit: ab0e85b

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

This PR includes changesets to release 11 packages

Name	Type
@react-router/dev	Patch
@react-router/fs-routes	Patch
@react-router/remix-routes-option-adapter	Patch
create-react-router	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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[github-actions]

🤖 Hello there,

We just published version 7.6.0 which includes this pull request. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!