Enable the object-shorthand eslint rule (#1857)

## Description:

Enable the `object-shorthand` eslint rule.

## 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

src/core/worker/WorkerClient.ts

@@ -184,8 +184,8 @@ export class WorkerClient {
         id: messageId,
         playerID,
         type: "player_actions",
-        x: x,
-        y: y,
+        x,
+        y,
       });
     });
   }