fix handle conditions: in some cases however conditions do have value…

…s, we do need the OPERATORS 'IS NULL' and 'IS NOT NULL' and since they are only available in the condition without values, some filters are not working anymore

packages/extra/src/Querying/ConditionParsers/Drupal/DrupalConditionParser.php

@@ -53,9 +53,8 @@ public function parseCondition($condition): PathsBasedInterface
 
         if (array_key_exists(DrupalFilterParser::VALUE, $condition )) {
             if (!array_key_exists(DrupalFilterParser::OPERATOR, $condition )
-                || (array_key_exists(DrupalFilterParser::OPERATOR, $condition )
-                    && ($condition[DrupalFilterParser::OPERATOR] !== 'IS NULL'
-                        && $condition[DrupalFilterParser::OPERATOR] !== 'IS NOT NULL'))) {
+                || ($condition[DrupalFilterParser::OPERATOR] !== 'IS NULL'
+                        && $condition[DrupalFilterParser::OPERATOR] !== 'IS NOT NULL')) {
                 return $this->drupalConditionFactory->createConditionWithValue($operatorName, $condition[DrupalFilterParser::VALUE], $path);
             }
         }