[EDU-2105] - Render both auth examples in examples page

[GregHolmes]

Description

Checklist

• Commits have been rebased.
• Linting has been run against the changed file(s).
• The PR adheres to the writing style guide and contribution guide.

[coderabbitai]

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch EDU-2105-Update-JWT-and-token-auth-examples-to-use-Ably-demo-endpoint

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