PHPStan 2.2: Invalid constant reported for Collator::setAttribute() #14720

Bug report

Since v2.2.0, PHPStan reports argument.invalidConstant on Collator::setAttribute() with Collator::ON as second parameter (see reproduction code).

Code snippet that reproduces the problem

https://phpstan.org/r/f499e8b6-ec8b-460d-8ead-fcb0870a8f1d

Expected output

There should be no error; it's totally fine to pass Collator::ON as constant.

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