Bug: infinite re-renders when queueing state updates via promises during render

[mjesun]

React version: 18.3.1

Steps To Reproduce

1. Created a sandbox to illustrate the issue.
2. Open and it "trigger".
3. Check the console. 100 renders are scheduled after hitting trigger, despite setState sets the same value.

The current behavior

• You will see more than 100 re-renders until we stop it, otherwise it would indefinitely run.

• This does not happen on React 17, React 18 with legacy root and React 19 (at least in the sandbox, could be due to auto-optimization of the component via the compiler). Happens in all React 18 versions.

The expected behavior

• Calling setState with the same value already set, even in an asynchronous promise, should not re-trigger the render of the component, even if the operation of updating the state asynchronously within a component is not officially supported.