reportAny on partial Anys

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foo: list[Any] # should be an error

however there's tons of functions that take Any in the stdlib, eg.

def cast(typ: type[_T], val: Any) -> _T: ...

these should not report an error. possible solutions:

• don't report Any errors on function calls where the argument takes Any, since there'll either be an error on the function definition anyway, or the function is third party/stdlib and therefore not within the user's control (and it usually means object in these cases anyway)
• remove all Anys from typeshed
• special-casing (horrible idea)

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i think just reporting all explicit usages of Any will cover this case, and will match mypy's behavior.

reporting partial Any in the same way as partial unknown doesn't seem feasible because there's just way too much Any in the stdlib