iAPI Docs: Fix typos, code errors, and inaccuracies in the documentation

[DAreRodz]

What?

Fixes multiple documentation issues across the Interactivity API reference guides.

Why?

The Interactivity API docs contained various typos, incorrect code examples, grammar issues, and
inaccuracies that could mislead developers. For example, an unclosed wp_interactivity_state()
call, a navigate() call referencing the wrong store, invalid JSON, incorrect language tags on
code fences, and several grammar/spelling errors.

How?

Note

For reviewers: the last commit contains format corrections; it can be skipped to check the actual changes in the documentation.

This PR applies fixes across 10 documentation files in docs/reference-guides/interactivity-api/:

• Code corrections: Fix unclosed function calls, invalid JSON, missing commas, wrong function
  references (e.g., use dynamic import from @wordpress/interactivity-router for navigate()),
  replace wp_interactivity_state with wp_interactivity_config/getConfig for static data like
  nonces.
• Typos and grammar: Fix misspellings (sucessfully, extrat, leanier), grammar errors
  (allows to set → allows you to set), and subject-verb agreement.
• Accuracy: Correct claims about getServerState()/getServerContext() read-only behavior,
  fix Phase 2 ordering to match source, fix CSS deactivation mechanism docs, update deprecated
  two-hyphen unique-ID syntax to three hyphens.
• Consistency: Standardize code fence language tags (javascript → js, php → html for
  HTML-only blocks), standardize data-wp-interactive quoting to double quotes, normalize ~10 KB
  formatting.
• TypeScript example: Rename increment to multiply with state.counter *= state.product
  to better match the example's state.product property.
• Formatting: Run Prettier on all Interactivity API documentation files (docs/reference-guides/interactivity-api/) and package markdown files (packages/interactivity/, packages/interactivity-router/) to fix code style inconsistencies.

[github-actions]

Flaky tests detected in bcb3bcd.
Some tests passed with failed attempts. The failures may not be related to this commit but are still reported for visibility. See the documentation for more information.

🔍 Workflow run URL: https://github.com/WordPress/gutenberg/actions/runs/24235395317
📝 Reported issues:

• [Flaky Test] post title and content are editable and blocks can be inserted #76524 in /test/e2e/specs/editor/various/post-content-focus-mode.spec.js
• [Flaky Test] should insert two subsequent mentions #71871 in /test/e2e/specs/editor/various/mentions.spec.js
• [Flaky Test] should move focus back to the Publish panel toggle button when canceling #76179 in /test/e2e/specs/editor/various/publish-panel.spec.js
• [Flaky Test] should show correct homepage actions based on current homepage or posts page #68892 in /test/e2e/specs/site-editor/homepage-settings.spec.js

[luisherranz]

@copilot, merge trunk and resolve conflicts.

[github-actions]

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Co-authored-by: DAreRodz <darerodz@git.wordpress.org>
Co-authored-by: luisherranz <luisherranz@git.wordpress.org>

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[Copilot]

@copilot, merge trunk and resolve conflicts.

Done. Merged trunk and resolved the one conflict in iapi-faq.md (combined the "much easier" wording from this branch with the client-side navigation link added in trunk). Merge commit: 41f614f.

[luisherranz]

LGTM! Thanks David!