[LIBSEARCH-146] Update experts panel with link to Experts page

[erinesullivan]

Overview

Figma designs have been updated to show Find more specialists linking to Find a Specialist.

This pull request closes LIBSEARCH-146.

Anything else?

Code and styling have been simplified for all related components.

ShowAllSpecialists

ShowAllChildren was only ever used in SpecialistsList, so the component was renamed to ShowAllSpecialists and moved to src/modules/specialists/components/.

SpecialistsWrapper

SpecialistsWrapper was an over engineered component, simply replaced by the SpecialistList component. The original component has been deleted.

Functional Components

To align with current React practices, these class components have been converted to functional components:

• ShowAllSpecialists
• RecordList

Testing

• Make sure the PR is consistent in these browsers:
  • Chrome
  • Firefox
  • Safari
  • Edge
• Run accessibility tests:
  • WAVE
  • ARC Toolkit
  • axe DevTools
• Make a search that includes specialists.
  • Does the Find more specialists link appear?
  • Do you see it on the first page of each datastore result?
  • Does the Show all # Library Specialists button appear?
    • Does it show the remaining specialists when clicked on?
• Check the rest of the site and see if everything looks okay.