feat(List): Ordered lists

[dreamwasp]

Overview

Makes List able to be rendered as an ol element and adds numbering to ol Lists. Also adds some accessibility fixes I came across while testing.

PR Checklist

• [x] Related to designs:
• [x] Related to JIRA ticket: [ABC-123]
• [x] I have run this code to verify it works
• [x] This PR includes unit tests for the code change
• [x] This PR includes testing instructions tests for the code change
• [x] The alpha package of this PR is passing end-to-end tests in all relevant Codecademy repositories

Testing Instructions

1. Head to the List storybook
2. See the new ordered list section + how nice it looks
3. See the ordered list example added to the responsive section + how nice it looks

PR Links and Envs

Repository	PR Link	PR Env
Monolith	Monolith PR	Monolith Env
Portal	Portal Link	Portal Env