chore(exhaust-spec): replace cold with hot observable (#5879)
chore(exhaust-spec): replace cold with hot observable (#5879)

Thanks.
benlesh/RxJS,ReactiveX/RxJS,ReactiveX/rxjs,benlesh/RxJS,martinsik/rxjs,ReactiveX/rxjs,ReactiveX/RxJS,martinsik/rxjs,ReactiveX/rxjs,ReactiveX/RxJS,benlesh/RxJS,ReactiveX/rxjs,benlesh/RxJS,ReactiveX/RxJS,martinsik/rxjs,martinsik/rxjs