Generic tag incompatible with parent false positive

[calebdw]

Hello!

This is related to #2295, apparently there is still an edge case which has not been covered yet.

The following test should fail:

<?php

namespace Phpactor;

abstract class Model {}

class Schedule extends Model {}

/** @template TModel of \Phpactor\Model */
class Factory {}

/**
 * @template TModel of Schedule
 * @extends Factory<TModel>
 */
class ScheduleFactory extends Factory {}

Thanks!