fix(rust): Restrict equal types to the current world

[chenyan2002]

Fix #1543

• Move name_interface to preprocess phase to avoid crashing when referring to not-yet-generated types from bindgen
• Restrict equal types to the current world, so that bindgen doesn't refer to types not reachable from the current world

[alexcrichton]

Oh sorry I didn't realize this was ready for some review. I figured draft + failing tests meant there was still some work to do locally.

These changes in general look good to me, I'm not entirely sure what would cause the test failures though. To me though it seems like it's in the right direction at least for resolving #1543 (I'd also request to be sure to include tests as well here though)