x11: Fix maximized splash-boot screen bug.
x11: Fix maximized splash-boot screen bug.

Fixes #14336

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