Bug report

I don't understand why this is so, but it is... so PHPStan must report it.

Code snippet that reproduces the problem

https://phpstan.org/r/79ae566c-82a4-456e-a476-d0c2e49da31d
https://3v4l.org/PHgBl#v8.1.6

Expected output

An error should be reported on line 10, because dynamic expressions are prohibited in attribute declarations.