Catalog Item Component Fails to Submit Request When Added to a New UIB Page Due to Missing Default Value for Mode PropertyDescriptionThe Catalog Item component fails to submit a request when added to a new UIB page without additional properties because the `mode` property lacks a default value. When the component is placed on a page, the `mode` property remains `null` by default.Steps to Reproduce 1. Navigate to the UIB experience in ServiceNow. 2. Create a new page. 3. Drag the Catalog Item component onto the page. 4. Do not configure any properties other than the default settings of the item. 5. Preview the page. 6. Click "Order" on the component. (The primary button)7. Observe that the system does not proceed with request submission, and no request-generated event is dispatched.WorkaroundPlease provide the default value for the mode property as "standalone" while configuring the component on the UIB page. Related Problem: PRB1977677