Bug report

Variadic arguments in arrow functions appear not to be treated as arrays, whereas in the equivalent anonymous function, the same code is handled correctly.

This only seems to occur when the relevant closure is passed to a receiving function/method annotated with @param Closure(mixed...) or similar.

Code snippet that reproduces the problem

https://phpstan.org/r/9f113284-063f-4bfa-b3cc-efa1fb02ba1a

Expected output

Arrow functions should be handled the same as other functions in this respect.

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