Fix incorrect error message for workers-py version requirement

[ryanking13]

I thought we fixed it a long before but we didn't.

[ask-bonk]

Model not found: cloudflare-ai-gateway/anthropic/claude-opus-4-6. Did you mean: anthropic/claude-opus-4.5, anthropic/claude-opus-4.6, anthropic/claude-opus-4.7?

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[ask-bonk]

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[codspeed-hq]

Merging this PR will improve performance by 10.12%

⚠️ Different runtime environments detected

Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.

Open the report in CodSpeed to investigate

⚡ 1 improved benchmark
✅ 71 untouched benchmarks
⏩ 129 skipped benchmarks¹

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
⚡	bm_Promise_Fib10	20.3 µs	18.5 µs	+10.12%

Tip

Curious why this is faster? Comment @codspeedbot explain why this is faster on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing gyeongjae/workers-py-version (b6ccb46) with main (479771c)}

Footnotes

1. 129 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩