GDScript: unsafe arithmetic assignment bug fix
GDScript: unsafe arithmetic assignment bug fix

Fix: #41051

godotengine/godot,Valentactive/godot,josempans/godot,Shockblast/godot,firefly2442/godot,akien-mga/godot,MarianoGnu/godot,vkbsb/godot,Paulloz/godot,pkowal1982/godot,honix/godot,sanikoyes/godot,vnen/godot,pkowal1982/godot,honix/godot,vnen/godot,vkbsb/godot,vkbsb/godot,BastiaanOlij/godot,firefly2442/godot,ZuBsPaCe/godot,MarianoGnu/godot,vkbsb/godot,Valentactive/godot,pkowal1982/godot,akien-mga/godot,Zylann/godot,josempans/godot,sanikoyes/godot,josempans/godot,Faless/godot,MarianoGnu/godot,josempans/godot,MarianoGnu/godot,pkowal1982/godot,BastiaanOlij/godot,sanikoyes/godot,Zylann/godot,vnen/godot,godotengine/godot,Valentactive/godot,Zylann/godot,Paulloz/godot,DmitriySalnikov/godot,guilhermefelipecgs/godot,sanikoyes/godot,akien-mga/godot,firefly2442/godot,BastiaanOlij/godot,vkbsb/godot,guilhermefelipecgs/godot,akien-mga/godot,Shockblast/godot,pkowal1982/godot,DmitriySalnikov/godot,Zylann/godot,guilhermefelipecgs/godot,Shockblast/godot,Faless/godot,Faless/godot,firefly2442/godot,ZuBsPaCe/godot,sanikoyes/godot,ZuBsPaCe/godot,Paulloz/godot,honix/godot,sanikoyes/godot,Faless/godot,DmitriySalnikov/godot,godotengine/godot,pkowal1982/godot,DmitriySalnikov/godot,ZuBsPaCe/godot,vkbsb/godot,Faless/godot,Shockblast/godot,godotengine/godot,akien-mga/godot,sanikoyes/godot,guilhermefelipecgs/godot,vnen/godot,Paulloz/godot,Paulloz/godot,vnen/godot,Paulloz/godot,vkbsb/godot,guilhermefelipecgs/godot,josempans/godot,ZuBsPaCe/godot,Faless/godot,BastiaanOlij/godot,ZuBsPaCe/godot,Valentactive/godot,firefly2442/godot,ZuBsPaCe/godot,MarianoGnu/godot,Valentactive/godot,Shockblast/godot,Valentactive/godot,josempans/godot,Valentactive/godot,Faless/godot,firefly2442/godot,BastiaanOlij/godot,firefly2442/godot,DmitriySalnikov/godot,godotengine/godot,DmitriySalnikov/godot,Shockblast/godot,Faless/godot,josempans/godot,Zylann/godot,DmitriySalnikov/godot,honix/godot,Valentactive/godot,honix/godot,Paulloz/godot,guilhermefelipecgs/godot,godotengine/godot,vnen/godot,Shockblast/godot,Zylann/godot,godotengine/godot,Zylann/godot,vnen/godot,akien-mga/godot,MarianoGnu/godot,BastiaanOlij/godot,Zylann/godot,josempans/godot,akien-mga/godot,Shockblast/godot,guilhermefelipecgs/godot,pkowal1982/godot,akien-mga/godot,pkowal1982/godot,vkbsb/godot,guilhermefelipecgs/godot,BastiaanOlij/godot,vnen/godot,MarianoGnu/godot,firefly2442/godot,ZuBsPaCe/godot,sanikoyes/godot,MarianoGnu/godot,honix/godot,BastiaanOlij/godot,godotengine/godot