Update Kanvas whiteboarding docs to reflect default availability

[Copilot]

The whiteboarding page in Kanvas documentation still described Whiteboarding as a beta feature requiring manual enablement. This PR updates the page to match current behavior: Whiteboarding is enabled by default for all users.

• Content correction: default-on behavior

  • Reworded the intro paragraph to remove “enable the feature” guidance and state that Whiteboarding is available by default.

• Removed outdated beta workflow

  • Replaced the entire “Enable the Whiteboarding Beta Feature” section (preferences toggle flow) with a short “Access Whiteboarding” section focused on where users find and use the tools.

• Scope

  • Kept the rest of the page (feature highlights, customization, benefits, use cases) unchanged to preserve existing documentation structure and intent.

## Access Whiteboarding

Whiteboarding is available by default in Kanvas. No feature toggle is required.

1. Open the Kanvas design canvas.
2. Locate the bottom dock, which contains shapes, annotations, and other whiteboarding tools.
3. Use the whiteboarding toolbar to draw, annotate, and collaborate in real time.

• Fixes Whiteboarding out of date #1247

[coderabbitai]

Important

Review skipped

Bot user detected.

To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: 0addc871-d14e-4678-a434-9b6e33de950e

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}

[github-actions]

Preview deployment for PR #1248 removed.

This PR preview was automatically pruned because we keep only the 6 most recently updated previews on GitHub Pages to stay within deployment size limits.

If needed, push a new commit to this PR to generate a fresh preview.