Add check for append in foreach items assignment

Author: solverat

rules/CodeQuality/Rector/Foreach_/ForeachItemsAssignToEmptyArrayToAssignRector.php

@@ -104,6 +104,10 @@ public function refactor(Node $node): ?Node
             }
 
             if ($this->shouldSkip($stmt, $emptyArrayVariables)) {
+                if ($this->isAppend($stmt, $emptyArrayVariables)) {
+                    return null;
+                }
+                
                 continue;
             }