Fixed reference to Activity.add_ai_metadata

[rodrigobr-msft]

No description provided.

[Copilot]

Pull Request Overview

This PR fixes an incorrect function reference by changing from a standalone function call to an instance method call on the Activity object.

• Removed the add_ai_metadata import from the botframework.schema module
• Updated the function call from add_ai_metadata(activity, ...) to activity.add_ai_metadata(...)

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