[RTL] Fix underline/overline/strikethrough interaction with the "visible characters" property.
[RTL] Fix underline/overline/strikethrough interaction with the "visible characters" property.

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