The navigation prevention inside the preview doesn't always work for code components

Assign this one to myself. I think the issue is the preview area is rendered by an iframe, and when users click on links in iframe, by default, it refreshes the page, I'm thinking about adding a base tag in the preview iframe will make the link to be opened on the parent window.

@lauriii: When you have a chance, can you review my MR? I see that the cypress E2E job is fail because of 2 failed test cases in component-operations.cy.js. I don't think it's related to my changes.