#559: User Sees No Predefined Gutters

- Refactoring

Author: bluemwhitew

app/code/Magento/PageBuilder/view/adminhtml/ui_component/pagebuilder_row_form.xml

@@ -175,7 +175,7 @@
         <field name="margins_and_padding">
             <argument name="data" xsi:type="array">
                 <item name="config" xsi:type="array">
-                    <item name="default" xsi:type="string">{"margin":{"bottom":null,"left":null,"right":null,"top":null},"padding":{"bottom":null,"left":null,"right":null,"top":null}}</item>
+                    <item name="default" xsi:type="null" />
                 </item>
             </argument>
         </field>