poc(chat): add product modal with navigation

[FabienMotte]

Summary

This PoC:

• Adds an interactive product modal that displays detailed product information when the carousel action is clicked.
• Implements keyboard navigation support (arrow keys to navigate between products and the Escape key to close).
• Includes action buttons for viewing product details and adding products to favorites.
• Adds animations and transitions for modal interactions.
• Ensures the design is responsive.

Result

[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit 8c9e5cd:

Sandbox	Source
example-instantsearch-getting-started	Configuration
example-react-instantsearch-getting-started	Configuration
example-react-instantsearch-next-app-dir-example	Configuration
example-react-instantsearch-next-routing-example	Configuration
example-vue-instantsearch-getting-started	Configuration