correct RMB options for instanced inherited scene
correct RMB options for instanced inherited scene

When scene is inherited and later instanced as a part of another
scene, only options related to instancing will be visible - same
behavior as in 2.x
closes #9901

ex/godot,okamstudio/godot,vnen/godot,vkbsb/godot,pkowal1982/godot,honix/godot,Zylann/godot,ZuBsPaCe/godot,Faless/godot,mcanders/godot,Valentactive/godot,okamstudio/godot,okamstudio/godot,ageazrael/godot,godotengine/godot,groud/godot,Paulloz/godot,vnen/godot,zicklag/godot,vkbsb/godot,NateWardawg/godot,MarianoGnu/godot,Faless/godot,josempans/godot,MarianoGnu/godot,MarianoGnu/godot,akien-mga/godot,Paulloz/godot,zicklag/godot,Paulloz/godot,BastiaanOlij/godot,RandomShaper/godot,zicklag/godot,guilhermefelipecgs/godot,NateWardawg/godot,sanikoyes/godot,guilhermefelipecgs/godot,pkowal1982/godot,guilhermefelipecgs/godot,honix/godot,Paulloz/godot,zicklag/godot,godotengine/godot,MarianoGnu/godot,vkbsb/godot,BastiaanOlij/godot,DmitriySalnikov/godot,firefly2442/godot,tomreyn/godot,akien-mga/godot,MarianoGnu/godot,sanikoyes/godot,Shockblast/godot,ageazrael/godot,Shockblast/godot,godotengine/godot,n-pigeon/godot,groud/godot,mcanders/godot,pkowal1982/godot,guilhermefelipecgs/godot,FateAce/godot,jejung/godot,Valentactive/godot,godotengine/godot,n-pigeon/godot,vkbsb/godot,Valentactive/godot,josempans/godot,DmitriySalnikov/godot,mcanders/godot,ex/godot,NateWardawg/godot,FateAce/godot,Faless/godot,honix/godot,Shockblast/godot,RandomShaper/godot,tomreyn/godot,firefly2442/godot,RandomShaper/godot,FateAce/godot,Faless/godot,Faless/godot,mcanders/godot,vnen/godot,jejung/godot,BastiaanOlij/godot,ex/godot,NateWardawg/godot,DmitriySalnikov/godot,firefly2442/godot,ex/godot,pkowal1982/godot,Zylann/godot,Zylann/godot,BastiaanOlij/godot,jejung/godot,vkbsb/godot,vkbsb/godot,ex/godot,okamstudio/godot,ex/godot,godotengine/godot,MarianoGnu/godot,BastiaanOlij/godot,Brickcaster/godot,honix/godot,honix/godot,josempans/godot,Paulloz/godot,RandomShaper/godot,ZuBsPaCe/godot,akien-mga/godot,okamstudio/godot,firefly2442/godot,ZuBsPaCe/godot,Valentactive/godot,ex/godot,RandomShaper/godot,Valentactive/godot,josempans/godot,akien-mga/godot,groud/godot,firefly2442/godot,guilhermefelipecgs/godot,ageazrael/godot,mcanders/godot,MarianoGnu/godot,Paulloz/godot,groud/godot,josempans/godot,tomreyn/godot,n-pigeon/godot,Faless/godot,godotengine/godot,ageazrael/godot,Valentactive/godot,Brickcaster/godot,akien-mga/godot,ZuBsPaCe/godot,ageazrael/godot,akien-mga/godot,firefly2442/godot,akien-mga/godot,sanikoyes/godot,FateAce/godot,BastiaanOlij/godot,Brickcaster/godot,Zylann/godot,akien-mga/godot,Zylann/godot,jejung/godot,tomreyn/godot,mcanders/godot,sanikoyes/godot,guilhermefelipecgs/godot,ZuBsPaCe/godot,n-pigeon/godot,josempans/godot,DmitriySalnikov/godot,NateWardawg/godot,Brickcaster/godot,okamstudio/godot,guilhermefelipecgs/godot,Brickcaster/godot,okamstudio/godot,honix/godot,ex/godot,Zylann/godot,Valentactive/godot,Shockblast/godot,godotengine/godot,pkowal1982/godot,ZuBsPaCe/godot,vkbsb/godot,FateAce/godot,ageazrael/godot,DmitriySalnikov/godot,vkbsb/godot,Shockblast/godot,NateWardawg/godot,jejung/godot,NateWardawg/godot,Paulloz/godot,Zylann/godot,zicklag/godot,NateWardawg/godot,groud/godot,vnen/godot,BastiaanOlij/godot,josempans/godot,pkowal1982/godot,guilhermefelipecgs/godot,Shockblast/godot,zicklag/godot,Brickcaster/godot,DmitriySalnikov/godot,sanikoyes/godot,n-pigeon/godot,okamstudio/godot,ZuBsPaCe/godot,RandomShaper/godot,Faless/godot,vnen/godot,vnen/godot,NateWardawg/godot,Faless/godot,okamstudio/godot,sanikoyes/godot,firefly2442/godot,tomreyn/godot,ZuBsPaCe/godot,MarianoGnu/godot,okamstudio/godot,pkowal1982/godot,FateAce/godot,Shockblast/godot,vnen/godot,godotengine/godot,groud/godot,Shockblast/godot,n-pigeon/godot,Zylann/godot,RandomShaper/godot,josempans/godot,pkowal1982/godot,n-pigeon/godot,sanikoyes/godot,Brickcaster/godot,sanikoyes/godot,BastiaanOlij/godot,vnen/godot,DmitriySalnikov/godot,Valentactive/godot,firefly2442/godot,ageazrael/godot,jejung/godot