Timestamp tooltip is wrong in host upcoming activities view

[mna]

Fleet version: Fleet 0.0.0-SNAPSHOT-88d415d • Go go1.23.4

Web browser and operating system: Chrome Version 135.0.7049.52 (Official Build) (64-bit) on Linux (Fedora)

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💥  Actual behavior

See screenshots.

🧑‍💻  Steps to reproduce

1. Open a host's page on dogfood, e.g. https://dogfood.fleetdm.com/hosts/519
2. Hover the mouse over the timestamp of an upcoming activity
3. Wrong timestamp in the tooltip, should be the exact timestamp.

The past activities appear to be correct.

🛠️ To fix

Product designer @marko-lisica: Timestamp tooltip and days/minutes... ago value should match