[docs][material-ui] Add Number Field component page

[siriwatknp]

closes #19154 closes #44284

Preview: https://deploy-preview-47165--material-ui.netlify.app/material-ui/react-number-field/

For reviewer

For context and decision, see https://mui-org.slack.com/archives/C061V6JNZ9Q/p1762158626169409

• Demonstrate 2 visual design, NumberField and NumberSpinner
• The goal is to let user copy the code and paste into their project (let's not involve CLI code load in this PR)
• Each demo contains 2 files, the core component (for copy) and the demo file (for showing scenarios like error, sizes)

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

[mui-bot]

Netlify deploy preview

• docs/data/material/components/number-field/number-field.md

Bundle size report

Bundle	Parsed size	Gzip size
@mui/material	0B(0.00%)	0B(0.00%)
@mui/lab	0B(0.00%)	0B(0.00%)
@mui/system	0B(0.00%)	0B(0.00%)
@mui/utils	0B(0.00%)	0B(0.00%)

Details of bundle changes

Generated by :no_entry_sign: dangerJS against b0d679fc1a51f4f580af0b773636d948e14b4cc6

[siriwatknp]

@mapache-salvaje ready for review.

[mj12albert]

Demos look good 👍