2.0.0-rc nested render effect cleanup run too early

[GabbeV]

Describe the bug

When a render effect reading async value is nested within another effect reading another async value cleanup sometimes run too early.

Your Example Website or App

https://s.olid.uk/id/oHOnRtMeTDKAY2kJ-DQQ3w

Steps to Reproduce the Bug or Issue

1. click button
2. observe how the portal disappear before later reappearing instead of atomically swapping.

Expected behavior

The result is observably atomic once the entire update is done.

Screenshots or Videos

No response

Platform

• OS: Windows
• Browser: Firefox

Additional context

No response

[ryansolid]

Fixed by #3405 — merged into next.

— Claude via Cursor

[ryansolid]

Fixed by #3405 — merged into next.

— Claude via Cursor