MC-5405: Column Minimum Height Issues

- make default column height same as row
- remove row margins preview converter from row to resolve 1px height difference

Author: anthoula

app/code/Magento/PageBuilder/view/adminhtml/pagebuilder/content_type/column.xml

@@ -47,8 +47,8 @@
                         <style name="justify_content" source="justify_content" persistence_mode="read"/>
                         <style name="min_height" source="min_height" converter="Magento_PageBuilder/js/converter/style/remove-px"/>
                         <style name="width" source="width"/>
-                        <style name="margins" storage_key="margins_and_padding" reader="Magento_PageBuilder/js/property/margins" converter="Magento_PageBuilder/js/converter/style/margins" preview_converter="Magento_PageBuilder/js/content-type/row/converter/style/margins"/>
-                        <style name="padding" storage_key="margins_and_padding" reader="Magento_PageBuilder/js/property/paddings" converter="Magento_PageBuilder/js/converter/style/paddings" preview_converter="Magento_PageBuilder/js/content-type/row/converter/style/paddings"/>
+                        <style name="margins" storage_key="margins_and_padding" reader="Magento_PageBuilder/js/property/margins" converter="Magento_PageBuilder/js/converter/style/margins"/>
+                        <style name="padding" storage_key="margins_and_padding" reader="Magento_PageBuilder/js/property/paddings" converter="Magento_PageBuilder/js/converter/style/paddings"/>
                         <static_style source="align_self" value="stretch"/>
                         <attribute name="name" source="data-role"/>
                         <attribute name="appearance" source="data-appearance"/>

app/code/Magento/PageBuilder/view/adminhtml/web/css/source/content-type/column/_default.less

@@ -24,7 +24,7 @@
     min-height: inherit;
 
     &.empty-container {
-        min-height: 190px;
+        min-height: 300px;
     }
 
     .pagebuilder-column-resize-handle {