Add unstable support for RSC Framework Mode

[markdalgleish]

Marking as draft for now since this shouldn't be merged until we're ready for release.

[changeset-bot]

🦋 Changeset detected

Latest commit: fbc98d3

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	Major
@react-router/fs-routes	Major
@react-router/remix-routes-option-adapter	Major
create-react-router	Major
react-router	Major
react-router-dom	Major
@react-router/architect	Major
@react-router/cloudflare	Major
@react-router/express	Major
@react-router/node	Major
@react-router/serve	Major

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[github-actions]

🤖 Hello there,

We just published version 7.9.2-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 7.9.2 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!