Closes #40589

Replaced `System::new_all()` with `System::new_with_specifics` to fetch
only essential process information and exclude non-main threads from the
process list

after fix:
<img width="641" height="474" alt="image"
src="https://github.com/user-attachments/assets/32335552-2f7a-4317-8c01-f37b2eadfdc1"
/>


Release Notes:

- Fix duplicate process entries in WSL debug attach list