fix: 🐛 OIDC authentications not properly showing username

[lisbet-alvarez]

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-17231

Description

Use account_id (retrieved from authenticated data) to query authenticated account in order to display correct username for any authentication method. As a result, OIDC authentications should show proper username.

Screenshots (if appropriate)

OIDC + Password Auth in Admin UI:

Screen.Recording.2025-09-24.at.4.25.39.PM.mov

OIDC + Password Auth in Desktop UI:

Screen.Recording.2025-09-24.at.4.23.31.PM.mov

How to Test

1. Have OIDC auth method available
2. Validate username is displayed correctly after login.
3. Test in both admin and desktop UI

Checklist

• I have added before and after screenshots for UI changes
• I have added JSON response output for API changes
• I have added steps to reproduce and test for bug fixes in the description
• I have commented on my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works

PCI review checklist

• I have documented a clear reason for, and description of, the change I am making.
• If applicable, I've documented a plan to revert these changes if they require more than reverting the pull request.
• If applicable, I've documented the impact of any changes to security controls.
  Examples of changes to security controls include using new access control methods, adding or removing logging pipelines, etc.

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Project	Deployment	Preview	Comments	Updated (UTC)
boundary-ui	Ready	Preview	Comment	Oct 30, 2025 6:44pm
boundary-ui-desktop	Ready	Preview	Comment	Oct 30, 2025 6:44pm

[hashicc]

I think the fact that this all lives on the a specific user model means that we don't need to copy over and modify to the data.authenticated hash, we can probably derive it more easily from a getter that does a peekRecord, and rely on the certain points in the application flow to refresh the model as needed

[cameronperera]

Nice work Lis!

[ZedLi]

Looks good, I assume the test changes you've already made are now optional (which is fine) because having a username can fail?

[lisbet-alvarez]

Looks good, I assume the test changes you've already made are now optional (which is fine) because having a username can fail?

Yup that is correct, the only tests that would fail without the changes would be tests validating the dropdown has correct username.

[DhariniJeeva]

thanks for the fix!

[priya-patel04]

Great work! Thanks for the fix

got some approvals & PR feedback applied