Fix error when Cybran air factories die while building

[lL1l1]

Issue

When a Cybran air factory dies while building the following error occurs:

warning: Error running lua script: ...\fa\lua\effectutilities.lua(345): attempt to loop over field `BuildEffectBones' (a nil value)
         stack traceback:
         	...\fa\lua\effectutilities.lua(345): in function <...\fa\lua\effectutilities.lua:341>
         	...\fa\lua\sim\units\cybran\cairfactoryunit.lua(62): in function <...\fa\lua\sim\units\cybran\cairfactoryunit.lua:56>

The error occurs because the wrong blueprint value is passed to the function, and it occurs after the factory dies because the function is stuck in a loop before the erroring code runs. The loop can be traced to b7169ab (10 years ago) where the Cybran naval factory build beams which are forked in a thread were added to land/air factories without being forked.

Description of the proposed changes

• Fix the wrong value being passed
• Fork the build beam thread so that the other effects work: a glow under the unit, sparks on the tips of the build arms, and sparks in the unit hitbox. The build animation is noticeably brighter because of these functional effects.
  • Since it's been 10 years I'd recommend taking a close look. I think it's a good addition so I didn't change anything.
• Fix related intellisense warnings (unknown global and wrong param type)

Testing done on the proposed changes

Spawn factories and build something in them. There should be no errors in the log and the aforementioned effects should be visible.
Paragon + all land/air factories affected:

   CreateUnitAtMouse('urb0202', 0,   14.55,    7.91,  0.00000)
   CreateUnitAtMouse('urb0302', 0,   14.55,   -2.09,  0.00000)
   CreateUnitAtMouse('xab1401', 0,    1.55,   -6.09,  0.00000)
   CreateUnitAtMouse('urb0102', 0,   18.55,   16.91,  0.00000)
   CreateUnitAtMouse('zrb9602', 0,   24.55,   -1.09,  0.00000)
   CreateUnitAtMouse('urb0301', 0,  -23.45,  -11.09,  0.00000)
   CreateUnitAtMouse('zrb9502', 0,   23.55,    7.91,  0.00000)
   CreateUnitAtMouse('urb0201', 0,  -23.45,   -3.09,  0.00000)
   CreateUnitAtMouse('zrb9601', 0,  -15.45,  -11.09,  0.00000)
   CreateUnitAtMouse('urb0101', 0,  -19.45,    4.91,  0.00000)
   CreateUnitAtMouse('zrb9501', 0,  -15.45,   -3.09,  0.00000)

Despite having using the function in CSeaFactoryUnit, Cybran naval factories are not affected as their unit scripts replace CreateBuildEffects with the fancier 1/2/3 build arm component's CreateBuildEffects.

Checklist

• Changes are annotated, including comments where useful
• Changes are documented in the changelog for the next game version