Merge pull request #50 from xima-media/csp-css

fix: extend csp generation for style-src-elem directive

Author: maikschneider

Classes/ContentSecurityPolicy/EventListener/FrontendListener.php

@@ -29,6 +29,11 @@ public function __invoke(PolicyMutatedEvent $event): void
             new UriValue($formcycleUrl),
         );
 
+        $event->getCurrentPolicy()->extend(
+            Directive::StyleSrcElem,
+            new UriValue($formcycleUrl),
+        );
+
         $event->getCurrentPolicy()->extend(
             Directive::FontSrc,
             new UriValue($formcycleUrl),