[Enhancement] Improve Storybook Icon documentation to display all icons

[TimRoe]

Description of Change

Used the Storybook built in IconGallery and IconItem components paired with an iterating function to build out a grid of all our icons and insert it into the Docs page for the Icon component story section.

It was decided against, but I committed a prototype method of coercing the icon gallery into being a story with this commit, modeled on this comment from a discussion of the error I was encountering.

Screenshots/Video

Screen.Recording.2024-06-04.at.3.55.15.PM.mov

Testing

Validated appeared in Web as expected. Minor bug with (5) long icon names being cut off, but it is a known bug with Storybook and Jessica thought it was acceptable.

Doc pages do not presently appear in iOS/Android, but spot checked nothing seemed amiss.

• Tested on iOS
• Tested on Android
• Tested on Web

PR Checklist

Code reviewer validation:

• General
  • PR is linked to ticket(s)
  • PR has changelog label applied if it's to be included in the changelog
  • Acceptance criteria:
    • All satisfied or
    • Documented reason for not being performed or
    • Split to separate ticket and ticket is linked by relevant AC(s)
  • Above PR sections adequately filled out
  • If any breaking changes, in accordance with the pre-1.0.0 versioning guidelines: a CU ticket has been created for the VA Mobile App detailing necessary adjustments with the package version that will be published by this ticket
• Code
  • Tests are included if appropriate (or split to separate ticket)
  • New functions have proper TSDoc annotations

Publish

Changes do not warrant a new version per the versioning guidelines as they are purely Storybook/documentation.

[narin]

Looks great! Nice find with the IconGallery.