[DOCS] Remote Control docs state Pro plan support, but feature is unavailable on Pro

## Documentation Type
Incorrect/outdated documentation

## Documentation Location
https://code.claude.com/docs/en/remote-control

## Section/Topic
Requirements section and introductory alert

## Current Documentation
> "Remote Control is available as a research preview on Pro and Max plans. It is not available on
Team or Enterprise plans."

> "Subscription: requires a Pro or Max plan."

## What's Wrong or Missing
Running claude remote-control on a Pro plan returns: "Remote Control is not yet available on
your plan."

Environment:

• Claude Code version: 2.1.59
• Auth method: claude.ai (OAuth)
• Subscription type: pro
• Platform: macOS

## Suggested Improvement
Update docs to clarify that Pro support hasn't rolled out yet, or enable the feature
for Pro subscribers to match the documentation.

## Impact
High - Prevents users from using a feature as documented