jitCheckCastForArrayStore should receive array class instead of base class

[theresa-m]

A nullability check for null-restricted arrays is expected during checkcast. Currently fast_jitCheckCastForArrayStore and old_fast_jitCheckCastForArrayStore take the array base class as a parameter. In order to perform a nullability check the array class is needed.
@hzongaro @a7ehuo can you please update the calls to these methods to pass in an array class instead of its base class?