chore: make the tool-selection eval tolerant of Gemini's search-first pick

[WilliamBergamin]

Summary

This pull request stops the nightly tool-selection eval from failing when the Gemini judge picks a search tool as its first step on an ambiguous prompt.

The evals are there to make sure skills are not selected over MCP tools, as long as these eval select an MCP tool then they achieve their goal

Preview

N/A — test-only change.

Testing

• Run make test-eval and confirm tests/eval/test_tool_selection.py::TestToolSelection::test_tool_selection[ambiguous-reply-in-thread] passes.

Notes

• Test-only change, so no changeset is included.

Requirements

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.
• I've run make test and the tests pass.

[changeset-bot]

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Latest commit: fa3601a

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[vegeris]

Makes sense to me!