Make AnimatedSprite.animation complain when invalid animation name
Make AnimatedSprite.animation complain when invalid animation name

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