Update README.md to mention to toggle the stencil flag on the canvas …

[laurentlahmy]

Update README.md to mention to toggle the stencil flag on the canvas gl property for Mask to work, as mentioned in #1949

Why

Docs will lead newcomers to a failing Mask implementation.

What

Update docs.

Checklist

• Documentation updated (example)
• Storybook entry added (example)
• Ready to be merged

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Name	Status	Preview	Comments	Updated (UTC)
drei	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 7, 2024 9:50am

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[Nik-Nikhil]

Thanks Man , I was stuck in a project thinking something is wrong with my code

[github-actions]

Thank you for your work on this pull request! We’re marking this PR as stale to encourage a final push to bring it across the finish line.

Any update, comment, or change to the PR will automatically remove the stale label so it stays active in our workflow.

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