mutator: fix level stepper not showing back up after closing mutators

vmf_source/scripts/mods/vmf/modules/mutators/mutator_gui.lua

@@ -273,6 +273,8 @@ local mutators_view = {
 	deactivate = function(self)
 		if not self.initialized or not self.active then return end
 
+		self.active = false
+		
 		-- Showing widgets
 		local widgets = self.map_view.normal_settings_widget_types
 
@@ -298,8 +300,6 @@ local mutators_view = {
 			widgets.survival["mutator_checkbox_" .. i] = nil
 		end
 
-		self.active = false
-
 		--print("DEACTIVE")
 	end,