Support printer widget

### Description

The spec outlines the [printer widget](https://docs.getodk.org/form-question-types/#printer-widget) functionality which isn't currently handled by web forms at all.

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### Checklist
- **Does it need UI/UX design?**
- [x] Yes. Describe the UI/UX requirements or attach a Figma link in the "Design" section.
- [ ] No
- **Does it need API design?**
- [ ] Yes. Specify the endpoints, methods, or data structures needed.
- [x] No
- **Does it need design around state flow?**
- [ ] Yes. Outline the state flow requirements.
- [x] No
- **Does it need a test plan?**
- [x] Yes. Add the test plan as a comment in this task or attach the document.
- [ ] No
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### User Stories

- **As a** data collector,
**I want** to be able to print qr codes,
**so that** I can add labels to paper forms and test tubes and other physical media.

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### Design

- **Figma**: [Insert URL]
- **Design Docs**: [Insert URL]

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### Dependencies

-

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### Additional Notes

-

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### Related Issues

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Start with the linked ODK printer widget specification and compare it with the current web-forms behavior. The issue names no files, entry points, tests, or design assets; before implementation, define the UI/UX and test plan, then confirm that data collectors can print QR-code labels in web forms.

Written by the indexing model from the issue text.