chore(switchMapTo): convert switchMapTo tests to run mode (#6203)
chore(switchMapTo): convert switchMapTo tests to run mode (#6203)

* chore(switchMapTo): convert switchMapTo tests to run mode

* chore(switchMapTo): replace deprecated subscribe signature
benlesh/RxJS,martinsik/rxjs,ReactiveX/rxjs,ReactiveX/RxJS,ReactiveX/RxJS,martinsik/rxjs,benlesh/RxJS,ReactiveX/rxjs,martinsik/rxjs,ReactiveX/rxjs,benlesh/RxJS,ReactiveX/rxjs,ReactiveX/RxJS,martinsik/rxjs,ReactiveX/RxJS,benlesh/RxJS