UI: Fix updating static roles via role edit page on UI

[drivera258]

Description

Fixes UI bug when a user tries to update the rotation period for a static role via the UI

We now include the username of the role we're updating when making the post request instead of just the rotation period

✅ Ent tests pass

Before:

After:

Screen.Recording.2025-02-04.at.1.11.11.PM.mov

TODO only if you're a HashiCorp employee

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[github-actions]

CI Results:
All Go tests succeeded! ✅

[github-actions]

Build Results:
All builds succeeded! ✅

[hellobontempo]

Great work! Can you add a test, perhaps here, to assert the payload is what we expect when updating a static role?