fix: Add missing PropTypes to components

[zubeyralmaho]

What:

Add missing PropTypes definitions to several components.

Why:

• Improves code maintainability and type safety
• Better IDE autocomplete and developer experience
• Runtime prop validation in development mode
• Follows React best practices

How:

Add PropTypes to:

• PageItemResizer.js - Resizer component props
• ResponsiveContent.js - Responsive wrapper props
• Print/Print.js - Print component props

Checklist:

• Documentation added to the docs site
• Tests
• Ready to be merged

Related PR

#108