Bug report

Code snippet that reproduces the problem

https://phpstan.org/r/390bc581-9ff0-4fcf-b195-7e4914cb0fca

Maybe null coalesce operator is expanded internally to the 2nd method in https://phpstan.org/r/a2136bac-6af1-463c-95d9-ebd428fd13cd demo, but that must be understood by phpstan too and such code patterns are commonly used.

Expected output

no phpstan error