QueryBuilderExecuteMethodExtension - fix scenario where QueryBuilder::execute() return type is overriden by a stub

Author: ondrejmirtes

src/Type/Doctrine/DBAL/QueryBuilder/QueryBuilderExecuteMethodExtension.php

@@ -12,6 +12,7 @@
 use PHPStan\Type\DynamicMethodReturnTypeExtension;
 use PHPStan\Type\ObjectType;
 use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
 
 class QueryBuilderExecuteMethodExtension implements DynamicMethodReturnTypeExtension
 {
@@ -45,7 +46,7 @@ public function getTypeFromMethodCall(MethodReflection $methodReflection, Method
 
 			$name = $nameObject->toString();
 			if ($name === 'select' || $name === 'addSelect') {
-				return new ObjectType(ResultStatement::class);
+				return TypeCombinator::intersect($defaultReturnType, new ObjectType(ResultStatement::class));
 			}
 
 			$var = $var->var;