No changes needed - parameter documentation already correct

[Copilot]

Description

This PR was created to address feedback on #55159 regarding missing parameter documentation in TransferToParticipantOptions.cs:57. Upon investigation, the documentation is already present and correct:

/// <param name="targetIdentity"> The target to transfer the call to. </param>
public TransferToParticipantOptions(MicrosoftTeamsAppIdentifier targetIdentity)

The documentation follows the same pattern as other constructors in the class and was included in the original implementation (commit fba8f3c). The bot reviewer flagged this incorrectly. No code changes are required.

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