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/scripts/seed-gate-pass-train-scenarios.ts

@@ -227,7 +227,6 @@ async function ensureReferences(manager: any) {
         name: 'Gate Pass Demo Flat Wagon',
         capacityTons: 70,
         lengthMeters: 14,
-        maxWagonsPerTrain: 53,
         supportedLoadTypes: ['CONTAINER'],
         isActive: true,
         equatedLengthM: 14,

apps/edr-freight-api/src/scripts/seed-negad-indode-arrived-train.ts

@@ -102,7 +102,6 @@ async function main() {
             name: 'Negad Demo Flat Wagon',
             capacityTons: 70,
             lengthMeters: 14,
-            maxWagonsPerTrain: 53,
             supportedLoadTypes: ['CONTAINER'],
             isActive: true,
             equatedLengthM: 14,