FE: Refactor Discharge Upgrade Wizard accordions to use the web component

[randimays]

Description

The Discharge Upgrade Wizard application is using an older/custom implementation of accordions. We should be using the web component (va-accordion) instead.

User story

AS A Veteran I WANT accordion content to be implemented consistently across VA.gov SO THAT all accordions are consistent, accessible and defects are minimized

Engineering notes / background

We are using a custom implementation of accordions in InstructionsPage.jsx and AdditionalInstructions.jsx.

Analytics considerations

Quality / testing notes

Relevant unit tests should be updated.

Acceptance criteria

• [ ] Test InstructionsPage.jsx to ensure accordions are working as expected
• [ ] Test AdditionalInstructions.jsx to ensure accordions are working as expected
• [ ] Accessibility review

[chriskim2311]

Going to close this ticket and address it when we build in the subtask pattern.