Use std::move to save a copy

[wujingyue]

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[wujingyue]

!test

[github-actions]

Description

• Use std::move to avoid unnecessary copying

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Changes walkthrough 📝

	Relevant files
Enhancement	expr_simplifier.cpp Use `std::move` for `assumptions`                                                csrc/expr_simplifier.cpp Replaced copy of assumptions with std::move +1/-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 Possible Issue The use of std::move on assumptions may lead to undefined behavior if assumptions is used after this point in the function. Ensure that assumptions is not accessed again after being moved. const Context context(variables, std::move(assumptions), preserve_error);