Description of the Bug
RC will crash the game when install with IC2C

To Reproduce

1. Install both mods and launch the game
2. Build a Steam Turbine, log should begin spamming now
3. The multiblock will not assemble

Expected behavior
The multiblock should assemble

Logs & Environment
https://gist.github.com/kappa-maintainer/75a967522ee57ba4d384a570de86f355

Additional context
IC2C's API will manually trigger a block update when tileentities were added to the energy network (ic2.core.energy.EnergyNetLocal#addMetaTileEntity), which triggers StructureLogic.onBlockChange and eventually change the whole structure state to UNTEST when forming

Probably related to:
2dfec3e

This may be fixed by doing an extra check on block update handling