[FIX] website: Add pictogram

When adding a pictogram to a page, the save button didn't automatically close the opened dialog.

opw:642944

addons/website/static/src/js/website.editor.js

@@ -1727,7 +1727,7 @@
             var final_classes = non_fa_classes.concat(this.get_fa_classes());
             this.media.$.className = final_classes.join(' ');
             this.media.renameNode("span");
-            this.media.$.attributes.style.textContent = style;
+            $(this.media.$).attr("style", style || null);
             this._super();
         },
         /**