Fix basename duplication in RouterProvider descendant routes

[brophdawg11]

• In BrowserRouter, useNavigateUnstable will handle resolving the relative path and prepending the basename
• In RouterProvider, the router.navigate will handle resolving relative paths and prepending the basename

However, If you use RouterProvider and include some descendant <Routes> inside the tree, then that needs to use useNavigateUnstable to resolve relative paths but it should not also prepend the basename since navigation will still go through router.navigate

Closes #10467

[changeset-bot]

🦋 Changeset detected

Latest commit: bc0071d

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

This PR includes changesets to release 4 packages

Name	Type
react-router	Patch
react-router-dom	Patch
react-router-dom-v5-compat	Patch
react-router-native	Patch

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[github-actions]

🤖 Hello there,

We just published version 6.11.2-pre.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!

[github-actions]

🤖 Hello there,

We just published version 6.11.2 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!