wip: debug presence test

[AndyTWF]

Context

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Description

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Checklist

• [ ] QA'd by the author.
• [ ] Unit tests created (if applicable).
• [ ] Integration tests created (if applicable).
• [ ] Follow coding style guidelines found here.
• [ ] TypeDoc updated (if applicable).
• [ ] (Optional) Update documentation for new features.
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Coverage Report

Status	Category	Percentage	Covered / Total
🟢	Lines	93.17% (🎯 92%)	2744 / 2945
🟢	Statements	93.17% (🎯 92%)	2744 / 2945
🟢	Functions	93.01% (🎯 92%)	213 / 229
🟢	Branches	93.49% (🎯 93%)	776 / 830

File Coverage

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Generated in workflow #1606 for commit a429294 by the Vitest Coverage Report Action

[AndyTWF]

Superseded in favour of https://github.com/ably/ably-chat-js/pull/376