Visual actors can be modified by technologies, but the following scenarios don't work:
- Entities created after the modification-message don't have it
- Fogged entities don't have it, nor when initially fogging, after a defogging, and if a player upgrades a fogged entity and the tech has no classes, it will show the change (really this is just broken in 99% of cases here).
- Corpses don't have it
- Building placement preview don't have it
- Building foundation previews don't have it.
This fixes that.