test(ModelManager): increase time.tick to harden flaky tests

Author: remarkablemark

src/components/ModelManager/ModelManager.test.tsx

@@ -506,7 +506,7 @@ describe('ModelManager', () => {
 
       let props = getLastSelectProps();
       props.onChange?.('download');
-      await time.tick(10);
+      await time.tick(20);
 
       props = getLastSelectProps();
       props.onChange?.('qwen2.5-coder:7b');