Feature/istwcms 6638 l26yan using layout builder iframe modal instead layout builder modal

config/install/layout_builder_iframe_modal.settings.yml

 layout_builder_iframe_routes:
-  - layout_builder.configure_section
-  - layout_builder.remove_section
-  - layout_builder.remove_block
-  - layout_builder.add_section
   - layout_builder.add_block
   - layout_builder.update_block
-  - layout_builder.move_sections_form
-  - layout_builder.move_block_form
-  - layout_builder.translate_block
-  - layout_builder.translate_inline_block
 custom_routes: {  }