Fix streak timezones and add tests

[youngkidwarrior]

• #840
• #839 👈
• dev

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[github-actions[bot]]

Vercel Unique URL: https://sendapp-je72l6z1o-0xsend.vercel.app Vercel Preview URL: sendapp-fix-streak-timezones-and-add-tests-0xsend.vercel.app Last Commit: 9c82f3ce001f6eaf9695c7443f5608e15c0f6b16

[youngkidwarrior]

Merge activity

• Nov 6, 3:16 AM EST: A user started a stack merge that includes this pull request via Graphite.
• Nov 6, 3:16 AM EST: A user merged this pull request with Graphite.