The Smart Sow feature now accounts for toxic fallout. It won't allow new sowing if one is active.

- Fixed logic that could make sensitive trees like cocoa from being planted when they should not be.
- Improved handling for plants that don't die from the cold. It can now predict their harvest day instead of suggesting they'll die of the cold.

Prediction now accounts for conditions currently in effect like cold snaps.

Auto-cut if dying now ignores plants that are growing indoors (basically checks if they are roofed).

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