docs: Revamp gridform docs

[aresnik11]

Overview

PR Checklist

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

Testing Instructions

Don't make me tap the sign.

1. Go to story X
2. Do something
3. Do that something in dark mode
4. Check it with VO
5. Finish and do a celebratory dance

PR Links and Envs

Repository	PR Link
Monolith	Monolith PR
Mono	Mono PR

[nx-cloud]

View your CI Pipeline Execution ↗ for commit 3d94191

Command	Status	Duration	Result
nx run-many --target=verify --parallel=3 --all	✅ Succeeded	<1s	View ↗
nx run-many --target=build --all	✅ Succeeded	2s	View ↗

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☁️ Nx Cloud last updated this comment at 2025-10-24 20:33:11 UTC

[codecademydev]

📬 Published Alpha Packages:

@codecademy/[email protected]

[github-actions]

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