TransitionGroup animates keyed shows before Suspense-Transition is done

[katywings]

Is: Currently if a keyed <Show> is used inside of a <TransitionGroup>, and the Show value is suspense-transitioned with startTransition, the exit and enter animations will already run with old state before the Suspense-Transition is even done.

Should: Ideally the animations should only run after the Suspense-Transition.

Video:

Bildschirmaufzeichnung.vom.2023-07-13.19-18-20.mp4

Playground: https://stackblitz.com/edit/github-324i4c-ubu1bo?file=src%2FApp.tsx

Versions:
"solid-js": "^1.7.8",
"solid-transition-group": "0.2.2"

[marvin-j97]

Here's another case, using Transition + Solid Router:

https://stackblitz.com/edit/github-324i4c-h11day?file=src%2FApp.tsx