chore(cli): warn CLI is RC

[maiieul]

What is it?

• Feature / enhancement
• Bug
• Docs / tests / types / typos
• Infra

Description

Checklist

• My code follows the developer guidelines of this project
• I performed a self-review of my own code
• I added a changeset with pnpm change
• I made corresponding changes to the Qwik docs
• I added new tests to cover the fix / functionality

[changeset-bot]

⚠️ No Changeset found

Latest commit: a528d21

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[maiieul]

To be merged when we officially release RC 😉

[github-actions]

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commit: a528d21