PB-375: Align video background with embedded video

- fix muted false issue for video tag

Author: omiroshnichenko

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

@@ -45,7 +45,7 @@
                     <element name="video">
                         <attribute name="video_source" source="src" converter="Magento_PageBuilder/js/content-type/video/converter/attribute/videosrc" preview_converter="Magento_PageBuilder/js/content-type/video/converter/attribute/videosrc"/>
                         <attribute name="autoplay" storage_key="autoplay" source="autoplay" converter="Magento_PageBuilder/js/content-type/video/converter/attribute/autoplay"/>
-                        <attribute name="muted_video" storage_key="autoplay" source="muted"/>
+                        <attribute name="muted_video" storage_key="autoplay" source="muted" converter="Magento_PageBuilder/js/content-type/video/converter/attribute/autoplay"/>
                     </element>
                 </elements>
             </appearance>