Finalise and upload "next 30" WCAG 2.2 edits

Finalise the 'next 30' or so draft edits on Design System guidance identified for WCAG 2.2 updates.

What

These are the next 30 edits, after the initial 15, that make up the rest of the edits identified in a WCAG 2.2 content audit done by accessibility specialist.

Task is to finalise these edits between content and accessibility specialist, and add them to a draft PR

Why

These should complete needed edits to Design System guidance as identified in initial audit — there are other changes identified through other processes.

Who needs to work on this

Content designer, Technical writer, Interaction designer, Accessibility specialist

Who needs to review this

Accessibility specialist, designer, wider team

### Tasks
- [x] 'Content jam' to identify instructions needed for more trickier criteria: Redundant Entry, Consistent Help
- [x] 'Content jam' to add the more 'factual' critera: Target size, Focus appearance
- [x] 'Content jam' to write specific content for Dragging movements
- [x] Get any additional input from interaction designer for instructions
- [x] Start using a service || Focus appearance
- [x] Passwords || Consistent help
- [x] Page not found pages || Consistent help
- [x] Service unavailable pages || Consistent help
- [x] Layout || Consistent help
- [x] Contact a department or service team || Consistent help
- [x] Accessible autocomplete || Dragging movements
- [x] Tag || Dragging movements
- [x] Panel || Dragging movements
- [x] Question pages || Dragging movements
- [x] Breadcrumbs || Target size (Minimum)
- [x] Summary list || Target size (Minimum)
- [x] Button || Target size (Minimum)
- [x] Check answers || Target size (Minimum)
- [x] Create accounts || Redundant entry
- [x] Back link || Redundant entry
- [x] National Insurance numbers || Redundant entry
- [x] Summary list || Redundant entry
- [x] Bank details || Redundant entry
- [x] Check answers || Redundant entry
- [x] Recover from validation errors || Redundant entry
- [x] Question pages || Redundant entry
- [x] Error message || Redundant entry
- [x] There is a problem with the service pages || Redundant entry
- [x] Equality information || Redundant entry
- [x] Addresses || Redundant entry
- [x] Names || Redundant entry
- [x] Cookies page || Redundant entry
- [x] Check a service is suitable || Redundant entry
- [x] Upload all to pull request https://github.com/alphagov/govuk-design-system/pull/3090
- [x] Add links to preview site into doc
- [x] Review all edits in preview site for possible typos and errors

alphagov / govuk-design-system