The new major version of Storybook is better in many ways, and the migration isn't too hard. This change updates us to use it. For the most part, this is just swapping out old versions for new, and removing some packages that have been consolidated. Actual changes include: - We no longer need to manually inject axe-playwright into the page, since the a11y tests are now handled automatically. - Fixed the text-color assignment in theme.css, since there's actually nothing called `--ink-p-text-color`. - Pinned the version of `@types/react` because `@types/mdx` uses older names for things even when `@mdx/react` seems fine. Testing Done: - Ran full installs and builds. - Ran `build-storybook` - Ran the storybook server and flipped through various components. Verified that things worked as expected.