Clear mutation points cache on infinite MP cheat used

[CI09]

Brief Description of What This PR Does

Extra cache was added, also microbe editor cheat panel now references microbe editor, and infinite MP cheat connects to another method (other method wasn't microbe editor cheat panel's specifically, but inherited from its base class instead, that's why)

Related Issues

Closes #6987

Progress Checklist

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[hhyyrylainen]

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

[CI09]

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.

[hhyyrylainen]

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).

[CI09]

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

[hhyyrylainen]

Well EditorMPTests.cs is just the tests, so changing it won't impact much. Though it might be the case that after the underlying bug is solved, the tests also need updating.

I think the problem is unlikely in SpeciesComparer, because it doesn't know what max MP is so it just tallies up the changes. What I think the most likely place the bug is is that the editor code misinterprets data from the change calculation. It should be updated to tell the difference between the new action costing too much MP and the MP being already consumed but the new action doesn't make the situation worse. I think that would allow free actions when at 0 MP and maybe any action if cheats are enabled (though this might need a further small tweak depending on how changes are assumed to be free with the cheats on).