[number field][slider] Fix missing field state data attributes

[mj12albert]

Fixes #3908

• I have followed (at least) the PR section of the contributing guide.

[pkg-pr-new]

• base-ui-tanstack-start

• vite-css-base-ui-example

  pnpm add https://pkg.pr.new/mui/base-ui/@base-ui/react@3909
  

  pnpm add https://pkg.pr.new/mui/base-ui/@base-ui/utils@3909
  

commit: 1738a83

[mui-bot]

Bundle size report

Bundle	Parsed size	Gzip size
@base-ui/react	🔺+12B(0.00%)	🔺+5B(0.00%)

Details of bundle changes

---

Check out the code infra dashboard for more information about this PR.

[netlify]

✅ Deploy Preview for base-ui ready!

Name	Link
🔨 Latest commit	1738a83
🔍 Latest deploy log	https://app.netlify.com/projects/base-ui/deploys/6980a7a345c0f100078b90e0
😎 Deploy Preview	https://deploy-preview-3909--base-ui.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[greptile-apps]

Greptile Overview

Greptile Summary

Fixed missing field state data attributes (data-valid and data-invalid) on NumberField and Slider root components by adding fieldValidityMapping to their state attribute mappings. This ensures consistency with other field components like Switch, Radio, and Combobox that already include these attributes.

• Added fieldValidityMapping spread to packages/react/src/number-field/utils/stateAttributesMapping.ts
• Added fieldValidityMapping spread to packages/react/src/slider/root/stateAttributesMapping.ts
• Added comprehensive test coverage verifying the attributes appear correctly on root and child elements during validation state changes

Confidence Score: 5/5

• Safe to merge - straightforward bug fix with comprehensive test coverage
• The changes are minimal, follow established patterns used in other components (Switch, Radio, Combobox), and include thorough test coverage that validates the fix works correctly
• No files require special attention

Important Files Changed

Filename	Overview
packages/react/src/number-field/utils/stateAttributesMapping.ts	Added fieldValidityMapping to expose valid/invalid state attributes on NumberField root
packages/react/src/slider/root/stateAttributesMapping.ts	Added fieldValidityMapping to expose valid/invalid state attributes on Slider root
packages/react/src/number-field/root/NumberFieldRoot.test.tsx	Added tests verifying data-valid and data-invalid attributes on root and input elements
packages/react/src/slider/root/SliderRoot.test.tsx	Added tests verifying data-valid and data-invalid attributes on root and thumb elements