Update s-form example code

[billfienberg]

TLDR

• Update form example to include name on s-text-field
• Remove deleted accessibilityRole prop from s-button

Checklist

• I have 🎩'd these changes
• I have updated relevant documentation

References

• https://github.com/Shopify/extensibility-demo-app/pull/10
• Admin
  • Form: https://shopify.dev/docs/api/admin-extensions/2025-10-rc/polaris-web-components/forms/form
  • TextField: https://shopify.dev/docs/api/admin-extensions/2025-10-rc/polaris-web-components/forms/textfield
  • Button https://shopify.dev/docs/api/admin-extensions/2025-10-rc/polaris-web-components/actions/button
• Checkout
  • Form: https://shopify.dev/docs/api/checkout-ui-extensions/2025-10-rc/polaris-web-components/forms/form
  • TextField: https://shopify.dev/docs/api/checkout-ui-extensions/2025-10-rc/polaris-web-components/forms/textfield
  • Button: https://shopify.dev/docs/api/checkout-ui-extensions/2025-10-rc/polaris-web-components/actions/button

[billfienberg]

🎩 Tophat

Before

❌ CSB integration doesn't work after copy-pasting example code into block extension

After

✅ CSB integration works after copy-pasting example code into block extension

https://shopify.dev/docs/api/admin-extensions/2025-10-rc/polaris-web-components/forms/form

Screen.Recording.2025-09-16.at.23.30.54.mov