Fix selectable/tree node not reaching right-side of contents size when horizontal scrolling is active and no explicit size is known
Fix selectable/tree node not reaching right-side of contents size when horizontal scrolling is active and no explicit size is known

Flix01/imgui,tom-seddon/imgui,ggtucker/imgui,cmaughan/imgui,wflohry/imgui-addons,ggtucker/imgui,Pagghiu/imgui,cmaughan/imgui,wasikuss/imgui,thennequin/imgui,ocornut/imgui,cmaughan/imgui,bkaradzic/imgui,ocornut/imgui,dougbinks/imgui,elect86/imgui,ocornut/imgui,thevaber/imgui,Flix01/imgui,ggtucker/imgui,wflohry/imgui-addons,nProtect/imgui,bkaradzic/imgui,mikesart/imgui,burningreggae/imgui,Psybrus/imgui,mikesart/imgui,seanmiddleditch/imgui,cmaughan/imgui,tom-seddon/imgui,aimotive/imgui-glfw,nProtect/imgui,aimotive/imgui-glfw,Pagghiu/imgui,burningreggae/imgui,thevaber/imgui,dougbinks/imgui,Flix01/imgui,usagi/imguixx,seanmiddleditch/imgui,Psybrus/imgui,bkaradzic/imgui,thennequin/imgui,elect86/imgui,nProtect/imgui,usagi/imguixx,wasikuss/imgui