to RC: UI - fix a small issue in the device user page banner logic, add test…

[jacobshandling]

This PR already merged to main, see https://github.com/fleetdm/fleet/pull/24001. This is against the release branch so it can be included in 4.60.0.

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Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## rc-minor-fleet-v4.60.0 #24020 +/- ## ========================================================= Coverage ? 63.13% ========================================================= Files ? 1561 Lines ? 148134 Branches ? 3818 ========================================================= Hits ? 93529 Misses ? 47213 Partials ? 7392 ``` | [Flag](https://app.codecov.io/gh/fleetdm/fleet/pull/24020/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=fleetdm) | Coverage Δ | | |---|---|---| | [frontend](https://app.codecov.io/gh/fleetdm/fleet/pull/24020/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=fleetdm) | `52.54% <100.00%> (?)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=fleetdm#carryforward-flags-in-the-pull-request-comment) to find out more.

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[iansltx]

@jacobshandling if you want that extra commit to stick around please PR it into main as well