[Prod] Fixes for "something went wrong"

[thewatermethod]

Description of change

• Fixes two bugs: Something went wrong page was missing a page title, and using the back button from that page got you mixed results with the side navigation (it would usually stay disappeared)
• Refactored to abandon the context idea, we now use a more traditional model of error pages, required a few changes to tests

How to test

Confirm that the something went wrong page still functions as it originally did, with the exception of the page now having a meaningful title and the back button bug being resolved

Issue(s)

• https://jira.acf.gov/browse/TTAHUB-3416
• https://jira.acf.gov/browse/TTAHUB-3417

Checklists

Every PR

• Meets issue criteria
• JIRA ticket status updated
• Code is meaningfully tested
• Meets accessibility standards (WCAG 2.1 Levels A, AA)
• API Documentation updated
• Boundary diagram updated
• Logical Data Model updated
• Architectural Decision Records written for major infrastructure decisions
• UI review complete

Before merge to main

• OHS demo complete
• Ready to create production PR

Production Deploy

• Staging smoke test completed

After merge/deploy

• Update JIRA ticket status