removed "set_variable = { name = communism_je_1_var value = 25 }" from communism.10 event in line with vanilla change in update 1.7

Fixed issue causing mod to not overwrite vanilla event

Event now highlights the modded option, explaining why it is shown. The event option now also triggers if any IG or IG leader with a socialist ideology is powerful (20%+ clout), rather than just if they are in government.