refactor: use slices.Contains to simplify code

[tongjicoder]

Proposed changes

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

Checklist

• Pull request is created against the dev branch
• All checks passed (lint, unit/integration/regression tests etc.) with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

[dogancanbakir]

@tongjicoder Thanks for the PR!