Bug report

When using a template that is specified on the class as part of a method conditional return type, a warning is displayed, but the code works as anticipated.
this is a bit confusing as it might lead the user to believe it's not supported when in fact it is.

Code snippet that reproduces the problem

https://phpstan.org/r/ff6b7660-746a-464e-98b7-c1543d181060

Expected output

No error except the unreachable one.

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