fix: replace setTimeout with setImmediate/queueMicrotask in IncomingMessagesQueue

[gdorsi]

We've noticed when the sync server is busy processing incoming messages, the CPU usage is quite low.

I think that the reason is that setTimeout is too aggressive as a way to do collaborative scheduling, and moving to using setImmediate when available or queueMicrotask when not.

Doing some tests to see the effect.

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Project	Deployment	Preview	Comments	Updated (UTC)
clerk-demo	Ready	Preview	Comment	Nov 19, 2025 3:59pm
design-system	Ready	Preview	Comment	Nov 19, 2025 3:59pm
file-upload-demo	Ready	Preview	Comment	Nov 19, 2025 3:59pm
form-demo	Ready	Preview	Comment	Nov 19, 2025 3:59pm
gcmp-homepage	Ready	Preview	Comment	Nov 19, 2025 3:59pm
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jazz-filestream	Ready	Preview	Comment	Nov 19, 2025 3:59pm
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jazz-multi-cursors	Ready	Preview	Comment	Nov 19, 2025 3:59pm
jazz-nextjs	Ready	Preview	Comment	Nov 19, 2025 3:59pm
jazz-organization	Ready	Preview	Comment	Nov 19, 2025 3:59pm
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jazz-richtext-prosekit	Ready	Preview	Comment	Nov 19, 2025 3:59pm
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jazz-todo	Ready	Preview	Comment	Nov 19, 2025 3:59pm
jazz-vector-search	Ready	Preview	Comment	Nov 19, 2025 3:59pm
jazz-version-history	Ready	Preview	Comment	Nov 19, 2025 3:59pm
music-demo	Ready	Preview	Comment	Nov 19, 2025 3:59pm
passkey-demo	Ready	Preview	Comment	Nov 19, 2025 3:59pm
passphrase-auth-demo	Ready	Preview	Comment	Nov 19, 2025 3:59pm
quint-ui	Ready	Preview	Comment	Nov 19, 2025 3:59pm
reactions-demo	Ready	Preview	Comment	Nov 19, 2025 3:59pm

1 Skipped Deployment

Project	Deployment	Preview	Comments	Updated (UTC)
jazz-homepage	Ignored			Nov 19, 2025 3:59pm

[github-actions[bot]]

Jazz pre-release

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