Fix regression in podman machine ssh

While doing the provider obfuscation, I injected a regression where
podman ssh machine failed.  The regression was added in
0f22c1c772.  I have fixed the regression
and added a test to prevent future occurance.

Fixes: #27491

Signed-off-by: Brent Baude <bbaude@redhat.com>

cmd/podman/machine/list.go

@@ -190,7 +190,7 @@ func toHumanFormat(vms []*machine.ListResponse, defaultCon *config.Connection) [
 		isDefault := false
 		// check port, in case we somehow have machines with the same name in different providers
 		if defaultCon != nil {
-			isDefault = vm.Name == defaultCon.Name && strings.Contains(defaultCon.URI, strconv.Itoa((vm.Port)))
+			isDefault = vm.Name == defaultCon.Name && strings.Contains(defaultCon.URI, strconv.Itoa(vm.Port))
 		}
 		if isDefault {
 			response.Name = vm.Name + "*"

cmd/podman/machine/ssh.go

@@ -60,14 +60,15 @@ func ssh(_ *cobra.Command, args []string) error {
 		// it implies podman cannot read its machine files, which is bad
 		mc, vmProvider, err = shim.VMExists(args[0])
 		if err != nil {
-			return err
-		}
-		if errors.Is(err, &define.ErrVMDoesNotExist{}) {
-			vmName = args[0]
-		} else {
+			var vmNotExistsErr *define.ErrVMDoesNotExist
+			if !errors.As(err, &vmNotExistsErr) {
+				return err
+			}
 			sshOpts.Args = append(sshOpts.Args, args[0])
+		} else {
+			vmName = args[0]
+			exists = true
 		}
-		exists = true
 	}
 
 	// If len is greater than 1, it means we might have been