Don't set editor_hint true for project manager
Don't set editor_hint true for project manager

Due to this setting several callbacks get initialized but never used.
For instance void discoverer_callback(). This callback only initializes
the GDNativeSingletonDiscover *discoverer when called. This doesn't
happen in project manager and this in turn causes a call to
memdelete(NULL) which is invalid. This also seems to speed up startup a
little.

This fixes #11043 and fixes #10992

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