Bug report

Hello! Such code rises an error, but static method is obviously used in class itself
`<?php declare(strict_types = 1);

$v = new class {
public function test2(): string {
return self::test();
}
private static function test(): string {
return 'result';
}
};

$v->test2();`

Code snippet that reproduces the problem

https://phpstan.org/r/dc878513-8066-43ac-b920-a9b7c4e3d523

Expected output

No errors

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