MC-15022: HTML Content type does not render self closing html tags on storefront

Add copyright

Author: danmooney2

dev/tests/integration/_files/Magento/TestModulePageBuilderExtensionPoints/view/frontend/templates/html_content_type.phtml

@@ -1,3 +1,9 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+?>
 <div data-content-type="html">
     &lt;img src=&quot;http://example.com&quot;&gt;
     &lt;iframe width=&quot;560&quot; height=&quot;315&quot; src=&quot;https://www.youtube.com/embed/owsfdh4gxyc&quot; frameborder=&quot;0&quot; allowfullscreen&gt;&lt;/iframe&gt;

dev/tests/integration/_files/Magento/TestModulePageBuilderExtensionPoints/view/frontend/templates/static_html.phtml

@@ -1,3 +1,9 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+?>
 <div>
     <img src="http://example.com/block">
 </div>

dev/tests/integration/_files/Magento/TestModulePageBuilderExtensionPoints/view/frontend/templates/static_text.phtml

@@ -1 +1,7 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+?>
 Hello world