UX: Don't reset the form if there's an error/problem with pod creation

[jayhemsley]

Right now when creating a pod or container, if you misconfigure the pod/volume/network etc you get an error box that pops up as expected with an error message from podman, but when you close out of it the fields are all reset. It would be better UX to just state the error and not clear the fields when the error box is dismissed.