How do I customize widget's configuration dialog in kentico 13?

Hi

I have been tasked to expand the widget's configuration dialog's size. In kentico 12 we could edit the style of the dialog by simply referencing to the kentico-modal-dialog class and its children with css:

With kentico 13, I am unable to edit the width of the configuration dialog.

The reason behind why I can't edit the div with ktc-modal-dialog class is that the div is inside a shadow dom and element's styles inside a shadow dom are independent from the light dom styles. Inserting the stylesheets in the slots doesn't work either, the div is the parent element of the slots and I can't reference anything outside of the slots tags if my styles or stylesheets are in a slot tag.

My only options here are either make a custom javascript to insert the styles with js as the first element of the shadow dom or change the root value of "width: 600px". My question is.

Is there any way to change the widget's configuration dialog's width? Is there any setting in the administration page that I can tweak in order to get the same result as the first image?

Best regards