The bug happens when a second (or third, fourth etc.) Conyard deploys while a building is placed from the first Conyard.
The `WithMakeAnimation` running on the second CY uses `Animation::PlayThen` to call `Building::Unlock` in a delegate.
`WithBuildingPlacedAnimation::BuildingPlaced` runs when a building placed and replaces the delegate from `WithMakeAnimation` with its own before it has a chance to run, and so the new Conyard never gets unlocked.
The fix is then to simply not run `BuildingPlaced` on conyards that haven't completed the make animation yet.
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