Type: boolean (static setting in settings.py)
Default: falseDescription: Controls automatic shipping option selection when only one option is available.
When true: If only one shipping option is available after rule filtering, it is automatically selected and the shipping selection page is skipped
When false: User must explicitly select a shipping option even if only one is available
Note: This is a static Django setting, not a dynamic setting
Used in: ShippingOptionSelectionPage to determine if auto-selection should occur
