Cancel on disable form for other user redirects to the current user TFA overview

I added a patch that changes the logic on the disable form cancel callback to be similar to the TfaSetupForm cancel callback logic.

This also matches the code that is in submitForm().

I'm not sure why we have the code duplication, though resolving that I will consider out of scope for this issue.

Pushed to 8.x-1.x and 2.x.

Thank you for the patch.

Automatically closed - issue fixed for 2 weeks with no activity.