Bug report

Closure::bind must honor class-string<>

Code snippet that reproduces the problem

see https://phpstan.org/r/adaa989d-186d-4111-80df-b56afcf1fb0f
and https://phpstan.org/r/86a890d6-a041-4f1a-83ca-a5a777002971
https://3v4l.org/KQo6c works

Expected output

no error