SC2: Fix unused_items refill to respect item dependencies.

[Ziktofel]

What is this fixing or adding?

See bug: https://github.com/Ziktofel/Archipelago/issues/187 After main culling process done, some items might be brought back. However, the item dependencies were ignored. This fixes that by filtering unused_items by using dependency rules

How was this tested?

Tested with YAML that produced the issue, the problem is gone now

If this makes graphical changes, please attach screenshots.

No

[Ziktofel]

Yeah, the item dependencies could use some refactoring but that's out of scope of this PR

[Ziktofel]

Yeah, it's a bugfix, I've straightly fixed that so it can't break anything else

[Ziktofel]

Changed back due to @Salzkorn's tests

[Ziktofel]

Yeah, I've added a type check to validate that

[Ziktofel]

In Intellij it highlights the code if it fails type check