Make it easier to override the FrontendCustomerUserFormProvider

[flochntrl]

• FrontendCustomerUserFormProvider : Make it easier to override
• ResetController : use symfony standards

[anyt]

Thank you for contribution @flochntrl

ResetController : use Symfony standards

These changes look unrelated to the described issue. As we use the same style in a lot of other controllers, I think it makes sense to leave it as is or fix all of them at once.

[flochntrl]

I'm agree with your comment. I edit it because i work actually on it.

I rollback the controller because it isn't the PR to do that.

And i'll clean the git history

[anyt]

Changing self to static looks reasonable, everything else I guess should be reversed.

Please do not submit changes that are not tested, at least manually, but better with automated tests.
FrontendCustomerUserFormProvider class is covered with a unit test. You can update it to make sure the changes work as expected.