v2.6.0-canary.4

What's Changed

• [WARNING] Update Storybook to v8
• Support action button, and JSX title and label for Toast
• Support remove button and composite section in Toggle
• Fix precedence of mobile items and action buttons when hiding Navbar mobile menu button
• Introduce small variant for InputSelect

More details: https://github.com/LifeSG/react-design-system/wiki/Changelog
Full Changelog: v2.6.0-canary.3...v2.6.0-canary.4