Issue #2917072 by abu-zakham: Added Media and entity embed templates to fix...

Issue #2917072 by abu-zakham: Added Media and entity embed templates to fix the generate of weird HTML

themes/vartheme/templates/entity-embed/entity-embed-container.html.twig

+{#
+/**
+ * @file
+ * Default theme implementation of a container used to wrap embedded entities.
+ *
+ * Available variables:
+ * - attributes: HTML attributes for the containing element.
+ * - children: The rendered child elements of the container.
+ *
+ * @see template_preprocess_entity_embed_container()
+ *
+ * @ingroup themeable
+ */
+#}
+<div{{ attributes }}>{{ children }}</div>

themes/vartheme/templates/media/media--image.html.twig

+{#
+/**
+ * @file
+ * Default theme implementation to present a media entity.
+ *
+ * Available variables:
+ * - name: Name of the media.
+ * - content: Media content.
+ *
+ * @see template_preprocess_media()
+ *
+ * @ingroup themeable
+ */
+#}
+<div{{ attributes }}>
+  {% if content %}
+    {{ content }}
+  {% endif %}
+</div>

themes/vartheme/templates/video-embed-field/video-embed-iframe.html.twig

+{#
+/**
+ * @file
+ * Display an iframe with alterable components.
+ */
+#}
+<iframe{{ attributes }}{% if url is not empty %} src="{{ url }}{% if query is not empty %}?{{ query | url_encode }}{% endif %}{% if fragment is not empty %}#{{ fragment }}{% endif %}"{% endif %}>&nbsp;</iframe>