Bug report

Hi @ondrejmirtes, i just encountered a "weird" bug with phpstan.
I know this can be fixed with better phpdoc about the $blocks, $block or $settings variable.
But I still prefer to report this in case you consider there is something to improve.

Code snippet that reproduces the problem

https://phpstan.org/r/fbc84717-bdea-4dc3-858b-8d863a3d1119

Expected output

No errors

Did PHPStan help you today? Did it make you happy in any way?

Sure, it's installed on every Sonata project :)