SlotFill v27.4.0 error on server environments

[diegohaz]

Description

We conduct internal tests within Ariakit to ensure the interoperability between @ariakit/react components and @wordpress/components SlotFill. This ensures that updates to either library will not impact their compatibility.

Check out the unlisted example we're testing at: https://ariakit.org/examples/menu-wordpress-modal

An automated bot opens a PR whenever the @wordpress/components package gets updated: ariakit/ariakit#3707

However, the latest PR, which upgrades @wordpress/components to v27.4.0, is failing to build the example page due to a server error:

⨯ Internal error: Error: Missing getServerSnapshot, which is required for server-rendered content. Will revert to client rendering.
    at Object.useSyncExternalStore (/home/projects/ycbhs5/node_modules/next/dist/compiled/next-server/app-page.runtime.dev.js:35:2674)
    at t.useSyncExternalStore (/home/projects/ycbhs5/node_modules/next/dist/compiled/next-server/app-page.runtime.dev.js:35:163011)
    at useObservableValue (./node_modules/@wordpress/components/build-module/slot-fill/bubbles-virtually/observable-map.js:65:82)
    at useSlot (./node_modules/@wordpress/components/build-module/slot-fill/bubbles-virtually/use-slot.js:21:83)
    at Fill (./node_modules/@wordpress/components/build-module/slot-fill/bubbles-virtually/fill.js:47:60)

It appears that this useSyncExternalStore call is missing a third argument to function in server environments:

gutenberg/packages/components/src/slot-fill/bubbles-virtually/observable-map.ts

Line 78 in e8bbd2e

return useSyncExternalStore( subscribe, getValue );

cc @jsnajdr @DaniGuardiola

Step-by-step reproduction instructions

1. Open https://stackblitz.com/edit/ycbhs5?file=package.json&theme=dark
2. Wait for it to compile (it may take a while)
3. See error

Screenshots, screen recording, code snippet

No response

Environment info

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Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes