Bug report

The following code snippet results in Cannot unpack array with string keys, but phpstan says there is no error:

function foo(int ...$is): array
{
    return [...$is];
}

foo(...['a' => 2]);

Code snippet that reproduces the problem

https://phpstan.org/r/f271ae5f-b3e9-4444-9d9b-1c617ded9e95

Expected output

Some error that string keys are not supported in unpacked arrays

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