ApplyTypedClosure

Apply a typed closure

The given fun must have a closure type.

The arguments' types must match (be subtypes of) the parameter types of the closure type.

The tpe of this node is the result type of the closure type, or nothing if the latter is nothing.

Evaluation steps are as follows:

1. Let funV be the result of evaluating fun.
2. If funV is nullClosure, trigger an NPE undefined behavior.
3. Let argsV be the result of evaluating args, in order.
4. Invoke funV with arguments argsV, and return the result.