MC-5079: Add Box Sizing to Storefront Styles (Border & Height Storefront Issues)

- add box sizing for video, since max-width can be set by user

Author: anthoula

app/code/Magento/PageBuilder/view/frontend/web/css/source/content-type/video/_default.less

@@ -8,6 +8,9 @@
 //  _____________________________________________
 
 div[data-role='video'] {
+    .pagebuilder-video-wrapper {
+        box-sizing: border-box;
+    }
     .pagebuilder-video-wrapper,
     .pagebuilder-video-container {
         display: inline-block;