ui: animate pending activity tile

[nicole-obrien]

Summary

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Changelog

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Relevant Issues

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Testing

Platforms

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• Desktop
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Instructions

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Checklist

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• I have followed the contribution guidelines for this project
• I have performed a self-review of my own code
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• I have added or modified tests that prove my changes work as intended
• I have verified that new and existing unit tests pass locally with my changes
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• I have made corresponding changes to the documentation

[MarkNerdi996]

LGTM