HydroPumpedStorage outflow does not do conversion but inflow does.

[josephmckinsey]

For HydroPumpedStorage, get_inflow and set_inflow! will convert to device units, but get_outflow and set_outflow! does not. This doesn't cause any problems, but it is strange.

PowerSystems.jl/src/descriptors/power_system_structs.json

Line 3363 in be072ca

"name": "outflow",