Enable the sort-keys eslint rule (#1746)

## Description:

Enable the `sort-keys` eslint rule.

Fixes #1629

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [ ] I have read and accepted the CLA agreement (only required once).

src/core/execution/TrainExecution.ts

@@ -119,8 +119,8 @@ export class TrainExecution implements Execution {
     for (let i = 0; i < this.numCars; i++) {
       this.cars.push(
         this.player.buildUnit(UnitType.Train, tile, {
-          trainType: TrainType.Carriage,
           loaded: this.hasCargo,
+          trainType: TrainType.Carriage,
         }),
       );
     }