Skip internal scripts for breakpoints without printing an error
Skip internal scripts for breakpoints without printing an error

This removes:
```
ERROR: get_breakpoints: Condition ' base.begins_with("local://")
```
while running a project with blank scripts caused by deleting
or moving, or built-in scripts which are not yet saved within a scene
on running a project.

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