Fix a bug in Fusion::print

[wujingyue]

No description provided.

[wujingyue]

!test

[github-actions]

Description

• Corrected output stream in Fusion::print method

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Changes walkthrough 📝

	Relevant files
Bug fix	fusion.cpp Use `os` instead of `debug()` in Fusion::print                      csrc/fusion.cpp Replaced debug() with os for printing inputs Replaced debug() with os for printing outputs +4/-4

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PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

🧪 No relevant tests

⚡ Recommended focus areas for review Output Destination The code now prints inputs and outputs to os instead of debug(). Ensure that this change does not affect the intended logging behavior and that os is the correct destination for this output. os << "Inputs:" << std::endl; for (auto inp : inputs()) { os << " " << inp << std::endl; } os << "Outputs:" << std::endl; for (auto out : outputs()) { os << " " << out << std::endl; }