Clarify: Timeout prototype

[jonhurrell]

What

Review use of timeout in services vs our pattern

Why

Quite a few service teams are now using HMRC timeout, we should review what service teams are doing and review with our guidance. List of current DWP practice (internal link only)

Done when

• [x] Updated design system code
• [x] Example prototype of best practice
• [x] Document of any questions
• [ ] Tickets created for next steps

Outcomes

Updated guidance, understanding for what we might do next.

Anything else

• https://design-system.dwp.gov.uk/patterns/manage-a-session-timeout
• https://design.tax.service.gov.uk/hmrc-design-patterns/service-timeout/

[jonhurrell]

@htmlandbacon To run through example analysis.