Mutator generates `!!` code

[ondrejmirtes]

This change in phpstan-doctrine doesn't seem great:

-        if (!(new ObjectType(QueryBuilder::class))->isSuperTypeOf($scope->getType($queryBuilderNode))->yes()) {
+        if (!!(new ObjectType(QueryBuilder::class))->isSuperTypeOf($scope->getType($queryBuilderNode))->no()) {

No human would write it like that 😊

Should be instead:

+        if ((new ObjectType(QueryBuilder::class))->isSuperTypeOf($scope->getType($queryBuilderNode))->no()) {

//cc @staabm