bug #5903 Fix th default CSS class applied to global actions (javiere…

…guiluz)

This PR was merged into the 4.x branch.

Discussion
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Fix th default CSS class applied to global actions

Bug introduced in #5899.

Commits
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ddbea97 Fix th default CSS class applied to global actions

src/Factory/ActionFactory.php

@@ -97,10 +97,17 @@ public function processGlobalActions(?ActionConfigDto $actionsDto = null): Actio
                 throw new \RuntimeException(sprintf('Batch actions can be added only to the "index" page, but the "%s" batch action is defined in the "%s" page.', $actionDto->getName(), $currentPage));
             }
 
+            // if CSS class hasn't been overridden, apply the default ones
             if ('' === $actionDto->getCssClass()) {
                 $actionDto->setCssClass('btn action-'.$actionDto->getName());
             }
 
+            // these are the additional custom CSS classes defined via addCssClass()
+            // which are always appended to the CSS classes (default ones or custom ones)
+            if ('' !== $addedCssClass = $actionDto->getAddedCssClass()) {
+                $actionDto->setCssClass($actionDto->getCssClass().' '.$addedCssClass);
+            }
+
             $globalActions[] = $this->processAction($currentPage, $actionDto);
         }