Refactor wagon type handling and container wagon calculations

- Removed maxWagonsPerTrain from WagonType entity and related DTOs.
- Updated containerWagonsForLines function to calculate required wagons based on container lines more accurately.
- Added unit tests for containerWagonsForLines to ensure correct calculations.
- Adjusted related services and scripts to reflect the removal of maxWagonsPerTrain.
- Enhanced booking and contract components to use new status labels for better user experience.
- Implemented validation for unique container numbers in shipment forms.

apps/edr-freight-api/src/modules/train-scheduling/fleet-plan.util.spec.ts

@@ -15,7 +15,6 @@ const nw5: WagonType = {
   name: 'Flat Wagon',
   capacityTons: 70,
   lengthMeters: 14,
-  maxWagonsPerTrain: 53,
   supportedLoadTypes: ['CONTAINER'],
   isActive: true,
   supportsContainer: true,