[scheduler] Small cleaning

Author: flaviendelangle

docs/pages/x/react-scheduler/generateEvents.js

@@ -105,7 +105,7 @@ export class SchedulerStore<
         parameters.defaultVisibleDate ??
         adapter.startOfDay(adapter.now(stateFromParameters.displayTimezone)),
       errors: [],
-      ...(parameters.dataSource ? { isLoading: true } : { isLoading: false }),
+      isLoading: !!parameters.dataSource,
     };
 
     const initialState = mapper.getInitialState(schedulerInitialState, parameters, adapter);