[2.0.0-beta2] Component remove button should bypass form validation

Mikael, Can you have a look ? because you are currently working on the form

thank you for the fix :) merged.

For the record, that issue broke the slot removal 🐛 Adding data to slot and then remove it, empties all previous configuration Active ,
because '#limit_validation_errors' is changing the way the form_state is managed,
and remove the value from the form state at the #submit step. Indeed, values in form state are available only after validation, otherwise
they stay as user inputs.