feat(react-form): add useTypedAppFormContext

[LeCarbonator]

🎯 Changes

This PR adds the useTypedAppFormContext hook, which accepts a formOptions for typing, while using context to get the form instance instead.

This is a less type safe variant of withForm, which is why we will only recommend it in cases where passing as prop is not possible.

🚀 Release Impact

• This change affects published code, and I have generated a changeset.
• This change is docs/CI/dev-only (no release).

Todos

• Finalize naming of the hook
• Add docs section to address its use cases

[changeset-bot]

🦋 Changeset detected

Latest commit: d3b1481

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@tanstack/react-form	Patch

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View your CI Pipeline Execution ↗ for commit d3b1481

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nx run-many --target=build --exclude=examples/**	✅ Succeeded	6s	View ↗

---

☁️ Nx Cloud last updated this comment at 2025-10-26 19:49:12 UTC

[pkg-pr-new]

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commit: d3b1481

[codecov]

Codecov Report

❌ Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 52.94%. Comparing base (6892ed0) to head (d3b1481).
⚠️ Report is 43 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/react-form/src/createFormHook.tsx	87.50%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #1826       +/-   ##
===========================================
- Coverage   90.35%   52.94%   -37.42%     
===========================================
  Files          38       14       -24     
  Lines        1752      187     -1565     
  Branches      444       29      -415     
===========================================
- Hits         1583       99     -1484     
+ Misses        149       77       -72     
+ Partials       20       11        -9     

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