It got dropped in the way, so you can't test if the NativePromise has been completed or disconnected yet.
<rdar://problem/116150545>
Pull request: https://github.com/WebKit/WebKit/pull/18318
Committed 268562@main (6f5dfe93bc25): <https://commits.webkit.org/268562@main> Reviewed commits have been landed. Closing PR #18318 and removing active labels.