bug #6265 Fix creating Action back from DTO (dragosprotung)

This PR was merged into the 4.x branch.

Discussion
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Fix creating Action back from DTO

When creating the `Action` back from the DTO, the `url` is lost.

Commits
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eb030bb Add URL back from DTO when getting config object

Author: javiereguiluz

src/Dto/ActionDto.php

@@ -399,6 +399,10 @@ public function getAsConfigObject(): Action
             $action->linkToRoute($this->routeName, $this->routeParameters);
         }
 
+        if (null !== $this->url) {
+            $action->linkToUrl($this->url);
+        }
+
         if (null !== $this->displayCallable) {
             $action->displayIf($this->displayCallable);
         }