Fix Lint job - Githubissues

Our lint job is broken on main: see latest commit with a failing pre-commit job https://github.com/pytorch/torchcodec/actions/runs/11672509149/job/32501275316

It's failing, but green. This is because we have deactivated the ability for the job to properly fail

This PR:

let the pre-commit check fail when needed: see that it fails, as expected, in 736bdc4 (#333)
fixes the code formatting accordingly.

pytorch / torchcodec