[WIP] Copilot Request

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

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This section details on the original issue you should resolve

<issue_title>MSTEST0049 False positive with expressions of Moq</issue_title>
<issue_description>## Describe the bug

When mocking an API, if an overload with the cancellation token exists, the rule will trigger

Version used

Latest

Steps To Reproduce

See https://github.com/microsoft/vstest/pull/15539/changes#diff-b72c57420168ad8dde36e79c1710bf4211a778e9c356582e8ee287bbee45041dR4
</issue_description>

<agent_instructions>I don't know if we have a better pattern but maybe when the API is part of an expression tree we should not report the diagnostic. </agent_instructions>

Comments on the Issue (you are @copilot in this section)

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