[Open Assets] Enemies Drop Rings 1.3

Hello!
I edited the script so that enemies won't drop rings in Ultimate Mode, since it's meant to not have any rings.
This update might be pointless, but I felt like I needed to fix that.

Fixed a bug where Detons wouldn't spawn a ring if they exploded by crashing into a player.

Hello!
So, I fixed a bug where Big Floating Mines wouldn't spawn a ring only when a player causes them to explode (either by being too close or by touching it).