disable modern preloader which expects a fix

ot_templating/Resources/Private/Partials/Modern/Header.html

@@ -3,9 +3,7 @@
 <f:comment><!-- Render the topbar defined in partial/Topbar.html--></f:comment>
 <f:render partial="Modern/Assets" arguments="{_all}" />
 
-<script>
-    <f:render partial="Modern/Preloader" />
-</script>
+<f:comment><!--<f:render partial="Modern/Preloader" />--></f:comment>
 
 <f:comment><!-- Render the matomo integration code --></f:comment>
 <f:comment><!--<f:render partial="Classic/Matomo" />--></f:comment>

ot_templating/Resources/Private/Partials/Modern/Preloader.html

@@ -1,4 +1,5 @@
-<div id="pre-loader">
-    <f:image src="EXT:ot_templating/Resources/Public/assets/Modern/images/pre-loader/loader-06.svg" alt="" id="preloader-cmf"/>
-    <f:image src="EXT:ot_templating/Resources/Public/assets/Modern/images/pre-loader/loader-20.gif" alt="" id="preloader"/>
+
+<div id="preloader" style="display: none">
+    <f:image src="EXT:ot_templating/Resources/Public/assets/Modern/images/pre-loader/loader-06.svg" alt="loader" id="preloader-cmf"/>
+    <f:image src="EXT:ot_templating/Resources/Public/assets/Modern/images/pre-loader/loader-20.gif" alt="loader" id="preloader"/>
 </div>