`transformInputForOpenAICompatibility()` to remove keys that are specific to Copilot for interop compatibility with other model APIs

[gr2m]

See https://github.com/jclem/hacker-agent/blob/096748a870824055da56c784fad8228d58f20452/index.ts#L29-L32

[github-actions]

🎉 This issue has been resolved in version 2.2.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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