How does this fix the infinite MP cheat not working if at low MP when enabling it?

Well I didn't really look much into it, just tried clearing cache when using the cheat, and it kind of worked.
I now pushed a commit removing the extra caching, because I realized it just gets removed anyway... Yeah this PR turned out kinda weird.

Although it works, if you use up more MP than you had and turn off the cheat (so you have negative MP), you can't remove the organelles you placed, which might or might not be a bug, I don't know.

Although it works, if you use up more MP than you had and turn off the cheat (so you have negative MP), you can't remove the organelles you placed, which might or might not be a bug, I don't know.

I think that is caused by the actual underlying problem: #6696

I was kind of hoping that the infinite MP cheat would be fixed in a way that also fixed #6696 rather than doing a workaround like this, which needs to be done for all editors (I think this fix will actually not work at all in the multicellular editor).

So I kind of want to leave this PR open for a while to see if we get a fix for the underlying issue first. If not then I suppose it will eventually be good to at least have a bandaid fix for the microbe and multicellular editors (as this fix doesn't fix the underlying issue, it has to be hooked up to each editor separately to keep working).

It should now work for multicellular editor too now.
And yeah the fix is kinda scuffed but appearently I'm still not really comfortable in editing and adding to other people's code even after this time.
I have some idea that the issue might be somewhere in EditorMPTests.cs or in related parts, maybe in some SpeciesComparer, although the first one feels more like it. Though I don't promise it's necessarily there if someone wants to take a look at it