It's a nice idea, but I think it would be almost impossible to develop any reliable data for flame-out resistance because there are an infinitely variable set of operating conditions that can affect this. You can dump a bunch of air into the line and run it at various throttle settings on the ground, and it won't tell you anything about what the motor will do when it ingests a bubble at full power at the top of a loop at 1000AGL on a humid day because a weather front moved in the night before.

I have had my P-120 start and run without a hitch even though the fuel line was full of air ( I got lazy and didn't feel like purging it after tracking down a leaking Festo fitting), but I would never dare fly my plane with any unresolved air pockets.

There seems to be some consensus that among conventional model turbines, the Kingtechs generally keep running after digesting big bubbles, but I would not want to bet my model on it.

Should be a moot point anyway with all of today's great fuel system products and fittings. The is absolutely no reason to get bubbles into your engine if your fuel system is set up correctly and is properly maintained.