fix(get_entities): bugs lab is not shown after researching steal-processing

[ryukez]

There seems to be a bug that lab is not shown after researching steal-processing or logstic science pack 🤔 (In Open-Play)

before researching steal-processing

[
	...
	Chest(name='wooden-chest', direction=Direction.UP, position=Position(x=7.5, y=95.5), energy=0.0, status=EntityStatus.NORMAL, inventory=Inventory({}), height=1.0, width=1.0), 
	Furnace(fuel=Inventory({'coal': 45}), name='stone-furnace', direction=Direction.UP, position=Position(x=19.0, y=95.0), energy=1600.0, status=EntityStatus.WORKING, furnace_source=Inventory({'iron-ore': 48}), furnace_result=Inventory({'copper-plate': 17}), height=2.0, width=2.0), 
	Lab(position=Position(x=82.5 y=96.5), lab_input={}, status=EntityStatus.NO_RESEARCH_IN_PROGRESS, electrical_id=1728, warnings=[]), 
	Furnace(fuel=Inventory({'coal': 1}), name='stone-furnace', direction=Direction.UP, position=Position(x=6.0, y=97.0), energy=1600.0, status=EntityStatus.WORKING, furnace_source=Inventory({'copper-ore': 49}), 
	...
]

after

[
	...
	Chest(name='wooden-chest', direction=Direction.UP, position=Position(x=7.5, y=95.5), energy=0.0, status=EntityStatus.NORMAL, inventory=Inventory({}), height=1.0, width=1.0), 
	Furnace(fuel=Inventory({'coal': 45}), name='stone-furnace', direction=Direction.UP, position=Position(x=19.0, y=95.0), energy=1600.0, status=EntityStatus.FULL_OUTPUT, furnace_source=Inventory({'iron-ore': 48}), furnace_result=Inventory({'copper-plate': 17}), height=2.0, width=2.0), 
        // lab disappeared!!
	Furnace(fuel=Inventory({'coal': 1}), name='stone-furnace', direction=Direction.UP, position=Position(x=6.0, y=97.0), energy=1600.0, warnings=['furnace source is full', 'furnace result is full'], status=EntityStatus.FULL_OUTPUT, furnace_source=Inventory({'copper-ore': 50}), furnace_result=Inventory({'copper-plate': 100}), height=2.0, width=2.0), 
	...
]

I noticed this happens after researching steal-processing, logistic science pack, or solar energy. Though I'm not sure about the precise trigger, it seems to happen in technologies around logistic science pack.

And finally it turned out that it is caused by lines in serialize.lua around lab serialization, and it is resolved by commenting them out.
I'm sorry but I'm not familiar with factorio API and Lua code, so it was hard to find the root cause...

For now, this code is used to add research attribute to lab entity and it would be OK to comment it out, because research progress can be obtained by get_research_progress tool and it's something shared among all labs.

[JackHopkins]

Oh interesting! Thanks for looking into this. We can't comment out those lines because we need the Lab entity to contain the research that it is currently working on. I will see if we can fix the root cause.