backface-visibility: hidden doesn't hide elements from cypress

### Current behavior:

`cy.contains()` is getting an element which isn't actually visible

### Desired behavior:

It should fail as the element isn't visible

### Steps to reproduce: (app code and test code)

https://codepen.io/desandro/pen/LmWoWe

On this pen, `cy.contains('back')` will pass even when it is hidden.

### Versions

Latest version, chrome