Fix: Changing raw industry funding method redraws GUI (#9572)

src/industry_gui.cpp

@@ -769,6 +769,7 @@ public:
 		const IndustrySpec *indsp = (this->selected_type == INVALID_INDUSTRYTYPE) ? nullptr : GetIndustrySpec(this->selected_type);
 		if (indsp == nullptr) this->enabled[this->selected_index] = _settings_game.difficulty.industry_density != ID_FUND_ONLY;
 		this->SetButtons();
+		this->SetDirty();
 	}
 };