[css-view-transitions-1] Handling cases where transition constraints are broken mid transition #7882
Description
View transitions require a bunch of constraints to be satisfied by tagged elements listed here:
If any of the following is true: usedTransitionTags [contains](https://infra.spec.whatwg.org/#list-contain) transitionTag. element is not element’s [root](https://dom.spec.whatwg.org/#concept-tree-root) and element does not have [layout containment](https://drafts.csswg.org/css-contain-2/#layout-containment). element is not element’s [root](https://dom.spec.whatwg.org/#concept-tree-root) and element allows [fragmentation](https://drafts.csswg.org/css-break-4/#fragmentation). This state can also change mid transition. The simplest thing is to skip the transition in this case.