Layout Builder: fix d&d and UI Styles support

grimreaper → credited pdureau → .

Florent, I think we can merge like that because for "UI Styles" we will explore an other strategy:

• add a Style source plugin for attributes props
• expects components authors to crate one attributes prop by region (slot) when implementing a layout/grid system with SDc, like done by ✨ Create patterns/components for grid management Active in UI suite Bootstrap
  

      col_1_attributes:
        title: "Column attributes"
        description: "The attributes to customize the tag with the col class."
        $ref: "ui-patterns://attributes"
      col_2_attributes:
        title: "Column attributes"
        description: "The attributes to customize the tag with the col class."
        $ref: "ui-patterns://attributes"
  

• deprecate some parts of ui_styles_layout_builder?

Do we continue this discussion in a UI Style issue?

Thanks a lot Pierre for pushing this forward.

I have not reviewed or tested.

But before continuing in UI Styles, I would like to discuss the strategy for non-layout components.

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