Stacking context formed with view-transition-name not being detected. #30
Description
https://drafts.csswg.org/css-view-transitions/#named-and-transitioning
Elements captured in a view transition during a view transition or whose view-transition-name computed value is not none (at any time):
- Form a stacking context.
- Are flattened in 3D transforms.
- Form a backdrop root.
