fix core tests

core/racing/application/use-cases/SendPerformanceSummaryUseCase.test.ts

@@ -86,9 +86,9 @@ describe('SendPerformanceSummaryUseCase', () => {
 
     const mockResults = [
       {
-        driverId: 'driver-1',
-        position: 1,
-        incidents: 0,
+        driverId: { toString: () => 'driver-1' },
+        position: { toNumber: () => 1 },
+        incidents: { toNumber: () => 0 },
         getPositionChange: vi.fn().mockReturnValue(2),
       },
     ];