fix: prerender output paths should not include basename

[korkt-kim]

Description

When using basename in react-router.config.ts, prerendered files are incorrectly output to a subfolder matching the basename (e.g., build/client/base/index.html instead of
build/client/index.html).

The basename is meant to define the deployment path prefix, not the build output directory structure. The prerender logic was using normalizedPath (which includes basename)
instead of the actual route path for determining output file locations.

Changes

• Use dataRequestPath instead of normalizedPath for .data file output paths
• Use prerenderPath instead of normalizedPath for HTML file output paths
• Use prerenderPath instead of normalizedPath for resource route output paths
• Add test for prerender with basename configuration

Impact

No compatibility issues - This is a bug fix that corrects the output path behavior. Previously, prerendered files with basename would be placed in wrong directories, causing
404 errors when deployed.

Fixes #14587

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[changeset-bot]

🦋 Changeset detected

Latest commit: 6a652d5

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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[remix-cla-bot]

Thank you for signing the Contributor License Agreement. Let's get this merged! 🥳