Drop unsupported options for elements and modules

- form-icon in ``fieldsetStop``
- display-utilities in ``root_page_dependent_modules``

Author: zoglo

contao/templates/style-manager-core.xml

@@ -2924,7 +2924,7 @@
         <field title="chosen">1</field>
         <field title="blankOption">1</field>
         <field title="extendFormFields">1</field>
-        <field title="formFields">a:12:{i:0;s:11:"explanation";i:1;s:13:"fieldsetStart";i:2;s:12:"fieldsetStop";i:3;s:4:"text";i:4;s:8:"password";i:5;s:8:"textarea";i:6;s:6:"select";i:7;s:5:"radio";i:8;s:8:"checkbox";i:9;s:6:"upload";i:10;s:5:"range";i:11;s:7:"captcha";}</field>
+        <field title="formFields">a:11:{i:0;s:11:"explanation";i:1;s:13:"fieldsetStart";i:2;s:4:"text";i:3;s:8:"password";i:4;s:8:"textarea";i:5;s:6:"select";i:6;s:5:"radio";i:7;s:8:"checkbox";i:8;s:6:"upload";i:9;s:5:"range";i:10;s:7:"captcha";}</field>
       </child>
       <child alias="alignment">
         <field title="pid">2040</field>
@@ -2936,7 +2936,7 @@
         <field title="chosen">1</field>
         <field title="blankOption">1</field>
         <field title="extendFormFields">1</field>
-        <field title="formFields">a:12:{i:0;s:11:"explanation";i:1;s:13:"fieldsetStart";i:2;s:12:"fieldsetStop";i:3;s:4:"text";i:4;s:8:"password";i:5;s:8:"textarea";i:6;s:6:"select";i:7;s:5:"radio";i:8;s:8:"checkbox";i:9;s:6:"upload";i:10;s:5:"range";i:11;s:7:"captcha";}</field>
+        <field title="formFields">a:11:{i:0;s:11:"explanation";i:1;s:13:"fieldsetStart";i:2;s:4:"text";i:3;s:8:"password";i:4;s:8:"textarea";i:5;s:6:"select";i:6;s:5:"radio";i:7;s:8:"checkbox";i:8;s:6:"upload";i:9;s:5:"range";i:10;s:7:"captcha";}</field>
       </child>
     </children>
   </archive>

src/Generator/ConfigGenerator.php

@@ -88,7 +88,7 @@ public function getAllContentElements(): array
             return [];
         }
 
-        return $this->getArrayRecursiveKeys($GLOBALS['TL_CTE'], 'Stop');
+        return $this->getArrayRecursiveKeys($GLOBALS['TL_CTE'], ['Stop']);
     }
 
     /**
@@ -101,7 +101,7 @@ public function getAllFrontendModules(): array
             return [];
         }
 
-        return $this->getArrayRecursiveKeys($GLOBALS['FE_MOD']);
+        return $this->getArrayRecursiveKeys($GLOBALS['FE_MOD'], ['root_page_dependent_modules']);
     }
 
     /**
@@ -285,7 +285,7 @@ private function generateBackendCss(): void
         ThemeManager::createCSSFile('backendColors', $css);
     }
 
-    private function getArrayRecursiveKeys(array $array, ?string $filter = null): array
+    private function getArrayRecursiveKeys(array $array, ?array $filters = []): array
     {
         $return = [];
 
@@ -294,7 +294,12 @@ private function getArrayRecursiveKeys(array $array, ?string $filter = null): ar
             $return = array_merge($group, $return);
         }
 
-        if (null !== $filter)
+        if (empty($filters))
+        {
+            return $return;
+        }
+
+        foreach ($filters as $filter)
         {
             foreach ($return as $k => $v)
             {