refactor: use slices.Contains to simplify code

[yingshanghuangqiao]

📝 Summary

There is a new function added in the go1.21 standard library, which can make the code more concise and easy to read.

⛱ Motivation and Context

📚 References

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✅ I have run these commands

• make lint
• make test
• go mod tidy

[metachris]

thanks!

[Copilot]

Pull Request Overview

This PR refactors the HasSource method in TxSummaryEntry to use the new slices.Contains utility from Go 1.21, reducing custom loop logic and improving readability.

• Replaced manual iteration in HasSource with slices.Contains
• Added import for the standard-library slices package
• Simplified code and eliminated boilerplate

Comments suppressed due to low confidence (2)

common/txsummary.go:72

• [nitpick] Consider adding or updating unit tests for HasSource to cover both matching and non-matching cases now that the implementation has changed.

	return slices.Contains(t.Sources, src)

common/txsummary.go:7

• Since slices.Contains requires Go 1.21 or later, ensure your go.mod specifies a minimum Go version of 1.21 to avoid build issues.

	"slices"