GPULightmapper: execute dilate also after denoise
GPULightmapper: execute dilate also after denoise

Dilate fills gaps that are caused by the rasterization. As dilate is based on
the alpha-channel which is not part of denoise, dilate can be run after denoise
as well. So that colors are not denoised/mixed over seams.

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