[Merged by Bors] - chore(Order/BooleanAlgebra): golf entire `diff_insert_of_notMem`, `insert_diff_of_mem`, `insert_diff_of_notMem` and `subset_insert_iff` using `grind` #28628

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.