Added regression tests

[staabm]

closes phpstan/phpstan#11534
closes phpstan/phpstan#10559

fixed by #5048

[phpstan-bot]

You've opened the pull request against the latest branch 2.2.x. PHPStan 2.2 is not going to be released for months. If your code is relevant on 2.1.x and you want it to be released sooner, please rebase your pull request and change its target to 2.1.x.

[phpstan-bot]

This pull request has been marked as ready for review.

[VincentLanglet]

Fixed by #5048 then, did you understand why ?

The issue bot changes seems huge https://github.com/phpstan/phpstan-src/actions/runs/22438882001?pr=5048 not sure if there is more fix

[staabm]

did you understand why ?

before #5048 when a ArrayDimFetch was specified, it was later on intersected with StaticTypeFactory::*OffsetAccessibleType() which downgraded explicit mixed arrays into implict mixed arrays because of new ArrayType(new MixedType(), new MixedType())

[staabm]

The issue bot changes seems huge phpstan/phpstan-src/actions/runs/22438882001?pr=5048 not sure if there is more fix

I looked thru all of them, but I don't think these are fixed. they just changed errors

[staabm]

the failling AttributeReflectionTest seems unrelated - same errors can be seen no 2.1.x already