MC-5383: Option Menus, Heading Inline Editor & tinyMCE Inline Editor Are Cut Off on Full Screen View

Increase padding-top of .stage-full-screen .pagebuilder-canvas to 50px

Author: danmooney2

app/code/Magento/PageBuilder/view/adminhtml/web/css/source/_page-builder.less

@@ -75,7 +75,7 @@
         }
 
         .pagebuilder-canvas {
-            padding-top: 25px;
+            padding-top: 50px;
         }
 
         .pagebuilder-panel-wrapper {