fix: clear recovered travel errors

apps/web/src/app/features/world/world.store.spec.ts

@@ -166,11 +166,13 @@ describe('WorldStore', () => {
     await vi.advanceTimersByTimeAsync(999);
 
     expect(api.getCurrentTravel).toHaveBeenCalledTimes(2);
+    expect(store.error()).toBe('Temporary failure');
 
     await vi.advanceTimersByTimeAsync(1);
 
     expect(api.getCurrentTravel).toHaveBeenCalledTimes(3);
     expect(store.currentTravel()).toEqual({ status: 'IDLE' });
+    expect(store.error()).toBeNull();
   });
 
   it('ignores a late poll response after the store is destroyed', async () => {

apps/web/src/app/features/world/world.store.ts

@@ -173,6 +173,7 @@ export class WorldStore implements OnDestroy {
         return;
       }
 
+      this.errorState.set(null);
       await this.setCurrentTravel(travel);
       if (travel.status === 'TRAVELLING') {
         this.scheduleTravelRetry();