docs(lit): replace deprecated getValue() with state.value in quick-start

[dojhoanrd-jw]

🎯 Changes

Fix usage of deprecated API in the Lit quick-start guide:

• Lit quick-start guide (docs/framework/lit/quick-start.md): Replace field.getValue() with field.state.value. The getValue() method is marked @deprecated in packages/form-core/src/FieldApi.ts with the message "Use field.state.value instead". This update keeps the Lit guide consistent with the other framework guides (React, Vue, Svelte, Solid, Angular, Preact), which already use field.state.value in their examples.

✅ Checklist

• I have followed the steps in the Contributing guide.
• I have tested this code locally with pnpm test:pr.

🚀 Release Impact

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

Summary by CodeRabbit

• Documentation
  • Updated Lit quick-start guide with revised field binding example.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 111d59c9-0eb8-4d4f-9a79-90a3cf23dc05

📥 Commits

Reviewing files that changed from the base of the PR and between 3886dcc and 266d138.

📒 Files selected for processing (1)

• docs/framework/lit/quick-start.md

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📝 Walkthrough

Walkthrough

This PR updates the Lit quick-start documentation to reflect the current field state access API. The input template binding is changed from field.getValue() to field.state.value to align with the documented field controller pattern.

Changes

Lit Quick-Start Documentation

Layer / File(s)	Summary
Lit quick-start field access pattern docs/framework/lit/quick-start.md	Input template .value binding is updated from field.getValue() to field.state.value, reflecting the current field state access pattern in the controller API.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

A tiny hop through words so bright,
Field values now in state's clear sight,
One line of docs doth gently mend,
The path that developers soon transcend. 🐰✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately summarizes the main change: replacing deprecated getValue() with state.value in the Lit quick-start documentation.
Description check	✅ Passed	The description is well-structured, follows the template, includes all required sections, explains the rationale for the change, and documents the checklist completion appropriately.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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