Enum specific type is coerced to more general scalar type when used in generics template

[KmeCnin]

Bug report

Given an enum of string Test::CONST_* when a variable typed like this is passed through a generic template, it lost its specific typing and is instead coerced to a generic string type.

Might be a duplicate of #9084 but not sure about it

Code snippet that reproduces the problem

https://phpstan.org/r/6322446c-cfa0-43d5-a526-aad71db61f43

Expected output

Expecting $bar to be a array<1|2>

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[ondrejmirtes]

With bleeding edge enabled this is fixed in 1.10.49: https://phpstan.org/r/a209e8f0-d697-4c78-9ea1-25076a383a52

[github-actions]

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