Update DynamicDialogCloseOptions to use generic type

[lenard123]

✔️ Motivation / Why This Is Needed

• This is a purely type-level improvement with no runtime implications.
• It allows consumers of the library to strongly type the close data, improving DX and reducing the need for downstream type assertions.
• Backward compatibility is fully preserved because T defaults to any.

🔍 Scope / Impact

• No breaking changes
• No functional changes
• No behavioral changes
• Only TypeScript generics applied to improve type accuracy
• This aligns with common TypeScript patterns and adds flexibility while keeping defaults unchanged

🐛 Defect Fixes (if applicable)

Although minor, this change addresses the loosely-typed nature of data?: any, which may lead to incorrect assumptions in consuming code.
To comply with project policy, an issue has been created documenting the type safety problem.

🏢 Company Policy Alignment

This PR does not introduce a feature request or significant behavioral change.
It is a small, backward-compatible typing improvement that enhances developer experience while staying within the project's guidelines.