New Confirmation Page: Non 200 submission status testing

[christinec-fftc]

Issue Description

Handle non 200 (error) scenarios from submission_status. For each of these, we should still display the green success alert since failure notification will come via email. Likely no code changes here, just testing.

Dependent on

• 95237

• 95241

  Tasks

• [ ] Mock up a non-200 response from vets-api
• [ ] Test scenarios for different http codes, as needed

Based on docs here 401 unauthorized 403 forbidden 404 no record found 500 or any other non 200?

mocks: https://www.figma.com/design/qyTtKDOTHZPGU59PAfqVhq/(526ez)-New-Confirmation-Page-and-Email-Touchpoints?node-id=8405-81028

Acceptance Criteria

• [ ] Verify success alert is displayed and yellow alert does not display.

[aurora-a-k-a-lightning]

during testing for https://github.com/department-of-veterans-affairs/va.gov-team/issues/95241 https://github.com/department-of-veterans-affairs/vets-website/pull/33012

i tested throwing a 500 error:

• frontend polled 3 times
• got 500 internal server error each time
• on the third poll, frontend pushed forward to new confirmation screen with green box, no claim id version (expected)!