This hotfix addresses some issues with the new atmospheric mixing that was causing potential for infinite ices spawning in world atmospheres as well as atmospheres not equalizing correctly in some 2x1 rooms.

• Fixed bug where clients could accidentally exit sleepers when leaving a game
• Fixed a few visual issues with new bench cords
• Fixed unable to attach appliances to some bench variants
• Fixed Infinite Ice spawning in vacuums that could sometimes happen due to incorrect handling of NaN values when calculating mix ratios in MixInWorld.
• Fixed PureIce SpawnContents and melt Temperature not being serialized.
• Added IsValid check to spawngas.
• Fixed issue where two isolated atmospheres could remain unbalanced.