Fix mainfileinfodetailsview appending

Since the jquery update to 3.5.0, it seems Handlebars doesn't correctly
render self-closed elements. This fixes mainfileinfodetailsview template
to not use self-closed elements and fixes the JS unit tests.

Signed-off-by: Vincent Petry <vincent@nextcloud.com>
Signed-off-by: nextcloud-command <nextcloud-command@users.noreply.github.com>

apps/files/js/templates.js

@@ -302,7 +302,7 @@ templates['mainfileinfodetailsview'] = template({"1":function(container,depth0,h
         return undefined
     };
 
-  return "<div class=\"thumbnailContainer\"><a href=\"#\" class=\"thumbnail action-default\"><div class=\"stretcher\"/></a></div>\n<div class=\"file-details-container\">\n	<div class=\"fileName\">\n		<h3 title=\""
+  return "<div class=\"thumbnailContainer\"><a href=\"#\" class=\"thumbnail action-default\"><div class=\"stretcher\"></div></a></div>\n<div class=\"file-details-container\">\n	<div class=\"fileName\">\n		<h3 title=\""
     + alias4(((helper = (helper = lookupProperty(helpers,"name") || (depth0 != null ? lookupProperty(depth0,"name") : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"name","hash":{},"data":data,"loc":{"start":{"line":4,"column":13},"end":{"line":4,"column":21}}}) : helper)))
     + "\" class=\"ellipsis\">"
     + alias4(((helper = (helper = lookupProperty(helpers,"name") || (depth0 != null ? lookupProperty(depth0,"name") : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"name","hash":{},"data":data,"loc":{"start":{"line":4,"column":40},"end":{"line":4,"column":48}}}) : helper)))

apps/files/js/templates/mainfileinfodetailsview.handlebars

@@ -1,4 +1,4 @@
-<div class="thumbnailContainer"><a href="#" class="thumbnail action-default"><div class="stretcher"/></a></div>
+<div class="thumbnailContainer"><a href="#" class="thumbnail action-default"><div class="stretcher"></div></a></div>
 <div class="file-details-container">
 	<div class="fileName">
 		<h3 title="{{name}}" class="ellipsis">{{name}}</h3>