Document that GridMap doesn't support visual layers or cull masks
Document that GridMap doesn't support visual layers or cull masks

See #40245.

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