Fix being able to dupe items via Machine Access Interface

[ALongStringOfNumbers]

What:
Fixes being able to dupe machines with the Machine Access Interface as shown in #1008

Implementation Details:
The dupe was occurring because of the super.insertItems call in the MetatileEntityMachineHatch item handler returning the stack when attempting to insert into a slot that had reached/exceeded its slot limit.

This fix simply sets the base slot limit of the Machine Access Interface to 16 (The amount for a regular Processing Array). The fix was done this way to also prevent people from attempting to cheese things, by placing a stack of machines into a Machine Access Interface attached to an unformed PA, and then forming the PA, thus having 1 stack of machines when the PA is only supposed to handle 16.

This works around the problematic behavior when the amount in the slot was greater than the slot limit.

Outcome:
Fixes being able to dupe machines in the Machine Access Interface. Closes #1008

[Exaxxion]

Seems prudent enough, though I do have one concern: have you tried forming an advanced PA, then without breaking the machine hatch, forming a basic PA with that hatch and trying the dupe exploit again?

[Quarri6343]

I tested it in game and found it does not fix anything
you still can reproduce #1008 with following steps:

1. form Advanced PA
2. put 64 machines into Machine Access Interface
3. unform Advanced PA
4. open Interface UI and shift click the machine in your inventory

[ALongStringOfNumbers]

@Quarri6343 Could you try this again? I believe I have gotten it working correctly, at least I could not reproduce the issue when I tried.

[IntegerLimit]

If this keeps happening, I do have one idea. A advanced machine access interface could be added, which must be used for the advanced PA, and cannot be used for the normal PA. Since the stack of machines had to be allowed in the machine access interface because of the advanced PA, this should make it so that the machine access interface would not need to allow more than 16 machines.