Bug report

After upgrade to PHPStan 2.1.12 I started getting a new error.

PHPStan expands iterable type to array|iterable|Traversable after assigning to a private property.

Code snippet that reproduces the problem

https://phpstan.org/r/23a5a3a5-c614-4c43-b287-d4739cbe3e77

Expected output

Type of the private property must be the same as of a counstructor parameter

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