[PR] EMAG disables borg interface locks instead of freeing them

[Lord_earthfire]

I think it should open the chest component (`src.opened`) instead of the head case for the following reasons:
* Prevents two-click, no tool round removal (emag -> swap hands -> grab brain)
* Emagger can remove the power cell to prevent radio callouts/immediate reprisals (borgs with no cell can still move, but can't use radio/tools)
* Emagger can immediately use a cyborg law linker to link them to a new rack (yay synergy)

I feel that is far too weak. Getting your cell removed doesn't threaten you as a borg, because you can just move away.

Even worse, they can still bodyblock by moving. Bodyblocking is the most effective way a borg can disrupt an antag. And this does absolutely nothing to prevent that.

If cells would make borgs immobile, that would be a good idea. But with how borgs function currently, a two click kill is much more preferable. For the borg as a threat as well as for the antag as a tool.