GLES2: Fix shadows shader error for SpotLights
GLES2: Fix shadows shader error for SpotLights

Fixes #23268.

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