feat: APPS-2563 convert flexible-rich-text component to vue3

[jendiamond]

Connected to APPS-2563

https://deploy-preview-465--ucla-library-storybook-vue3x.netlify.app/?path=/docs/flexible-rich-text--docs

Component Created: Flexible/RichText.vue

Stories: ~/stories/Flexible_RichText.stories.js

Spec: ~/stories/Flexible_RichText.spec.js

Notes: There were a lot of styles missing from Global RichText; that is now updated. The update to Global RichText affected some of the components using RichText so they were also updated.

Storybook tests were also updated with real data from Craft. Some stories were deleted because they were not useful.

Checklist:

• [x] I checked that it is working locally in the dev server
• [x] I checked that it is working locally in the storybook
• [x] I checked that it is working locally in the library-website-nuxt dev server
• [x] I added a screenshot of it working
• [x] UX has reviewed and approved this
• [x] I assigned this PR to someone on the dev team to review
• [x] I used a conventional commit message
• [x] I assigned myself to this PR

[github-actions[bot]]

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[github-actions[bot]]

🚀 Deployed on https://deploy-preview-465--ucla-library-storybook-vue3x.netlify.app

[pghorpade]

:tada: This PR is included in version 2.39.0-alpha.44 :tada:

The release is available on:

• npm package (@alpha dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: