`JSObject` on worker A can be deallocated on worker B

[kateinoigakukun]

let executor = try await WebWorkerTaskExecutor(numberOfThreads: 1)

var object: JSObject? = JSObject.global.Object.function!.new()
let task = Task(executorPreference: executor) {
    object = nil
    _ = object
}
await task.value
executor.terminate()