Group with Context menu implemented

[ofaruk84]

💡 What is the current behavior?

There is no implementation of Group with Context

GitHub Issue Number: #

🆕 What is the new behavior?

Group with context has been implemented
if you add IsForGroupContext parameter to Dropdown under Group then you can see the context menu

In screenshots below you can see that you should add IsForGroupContext to Dropdown

The Unit Test Results

🏁 Checklist

A pull request can only be merged if all of these conditions are met (where applicable):

• [x ] 🦮 Accessibility (a11y) features were implemented
• [x ] 🗺️ Internationalization (i18n) - no hard coded strings
• [x ] 📲 Responsiveness - components handle viewport changes and content overflow gracefully
• [ x] 📄 Documentation was reviewed/updated
• [ x] 🧪 Unit tests were added/updated and pass (dotnet test)
• [ x] 🏗️ Successful compilation (dotnet build, changes pushed)

👨‍💻 Help & support