Replace implicit getBy* assertion in v-modal test

[obulat]

Fixes

Fixes #2321 by @sarayourfriend

Description

This PR replaces the last implicit getBy* assertion in our unit tests with explicit expect().toBeFocused, and closes the milestone 🎉

Testing Instructions

The test should pass and should not throw any warnings.

Checklist

• My pull request has a descriptive title (not a vague title likeUpdate index.md).
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• My code follows the established code style of the repository.
• I added or updated tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no visible errors.
• I ran the DAG documentation generator (if applicable).

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[sarayourfriend]

Yay!!!! 🚀 🎉 🥳 🥇

[AetherUnbound]

Woohoo!