[docs] Update docs for react-instantsearch@7.23.0

[aymeric-giraudet]

Copilot Configuration

• Target repository: algolia/docs-new
• Create as: Draft PR
• Model: Claude Sonnet 4.5

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Summary

Update documentation for react-instantsearch v7.23.0 release.

Priority: high
Suggested content types: widget-docs, release-notes

Important: This issue is for updating documentation in the algolia/docs-new repository.
When working on this issue, please select algolia/docs-new as the target repository.

Changes to Document

New Widgets

• FilterSuggestions - add FilterSuggestions widget (#6861)

Modified Components

• autocomplete - add transformItems prop (#6853)
• chat - add default memory tools (#6873)
• chat - support prompt suggestions (#6831)

Source Reference

• Changelog
• Source code

Target Repository

Create your PR in: algolia/docs-new

The documentation lives in the algolia/docs-new repository, not in this repository (instantsearch).
When Copilot starts working on this issue, make sure to select algolia/docs-new as the working repository.

Instructions

1. Work in the algolia/docs-new repository (not instantsearch)
2. Look at the existing widget docs in doc/api-reference/widgets/ for format reference
3. For new widgets/connectors/hooks, create new MDX files following the existing patterns
4. For modified components, update the existing documentation to include new props/options
5. Follow the <ParamField> component pattern for props documentation
6. Include TypeScript types and code examples where appropriate
7. For breaking changes, update the migration guide if applicable

Documentation Format Reference

Widget/Hook documentation should follow this MDX structure:

---
title: ComponentName
description: Brief description of the component
---

<ParamField path="propName" type="string" required>
  Description of the prop.
</ParamField>

<ParamField path="optionalProp" type="boolean" default="false">
  Description of the optional prop.
</ParamField>

Checklist

• New component docs created (if applicable)
• Existing docs updated with new props/options
• Code examples added/updated
• TypeScript types documented
• Breaking changes noted in migration guide (if applicable)