[NodeTypeResolver] Apply logic Mixed inside Union check on TypeFactory::createUnionOrSingleType()

Author: samsonasik

rules/TypeDeclaration/NodeAnalyzer/CallTypesResolver.php

@@ -127,9 +127,9 @@ private function unionToSingleType(array $staticTypesByArgumentPosition, bool $r
                 $unionedType
             );
 
-            if ($staticTypeByArgumentPosition[$position] instanceof UnionType) {
+            if ($removeMixedArray && $staticTypeByArgumentPosition[$position] instanceof UnionType) {
                 foreach ($staticTypeByArgumentPosition[$position]->getTypes() as $subType) {
-                    if ($removeMixedArray && $subType instanceof ArrayType && $this->isArrayMixedMixedType($subType)) {
+                    if ($subType instanceof ArrayType && $this->isArrayMixedMixedType($subType)) {
                         $staticTypeByArgumentPosition[$position] = new MixedType();
                         continue 2;
                     }