format genPowerWithMul

[liqiangxl]

Minor change to genPowerWithMul(), to ensure a new line is added before indentation. Generated code changes from

        T4[0]
          = T2[0]        
  * T2[0];

to

        T4[0]
          = T2[0]
          * T2[0];

Bad format was introdued in #3774 by accident.

[github-actions]

Description

• Improve code formatting in genPowerWithMul()

• Ensure newline before indentation in generated code

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Changes walkthrough 📝

	Relevant files
Formatting	codegen.cpp Add newline before indentation                                                      csrc/codegen.cpp Add newline before indentation in genPowerWithMul() Ensure consistent formatting in generated code +2/-1

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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 Formatting Consistency The change introduces a new line before the multiplication operation, which is different from the original formatting. Ensure that this change is consistent with the overall code style and does not introduce any unintended formatting issues. code_ << "\n"; indent() << kTab << "* " << lhs;

[liqiangxl]

!test

[jjsjann123]