### Godot version

v4.0.beta.custom_build [d1e5903c6]

### System information

Arch Linux kernel 6.1.7-arch1-1 x86_64 OpenSSH 9.1p1-3

### Issue description

When using SSH remote deploy, if the extra args field is empty (the default) the ssh command is not executed with success because a single space is inserted in place of the extra args.

```
Creating temporary directory...
Executing: ssh -p 22  davi@192.168.1.50 mktemp -d
Exit code: 255, Output: ssh: Could not resolve hostname : Name or service not known

ssh: Could not resolve hostname : Name or service not known
```

If any valid argument is passed, the command is executed successfully, in the example below I duplicated the `-p 22`, which is ignored, to show that it is not a problem of the hostname passed.

```
Executing: ssh -p 22 -p 22 davi@192.168.1.50 mktemp -d
Exit code: 0, Output: /tmp/tmp.DwFObXBL2s
```

This is infuriating for when you have non-interactive authentication configured in ssh-agent and just the hostname is needed for the connection.
This occurs for both SSH and SCP.

### Steps to reproduce

1. Enable a project to deploy with ssh
2. Fill only the hostname
3. Try to deploy
4. See the error on the console

### Minimal reproduction project

N/A
valid = false;
			} else if (p_preset->get("notarization/apple_id_name") != "" && p_preset->get("notarization/api_uuid") != "") {
				err += TTR("Notarization: Both Apple ID name and App Store Connect issuer ID name are specified, only one should be set at the same time.") + "\n";
				valid = false;
			} else {
				if (p_preset->get("notarization/apple_id_name") != "") {
					if (p_preset->get("notarization/apple_id_password") == "") {
						err += TTR("Notarization: Apple ID password not specified.") + "\n";
						valid = false;
					}
				}
				if (p_preset->get("notarization/api_uuid") != "") {
					if (p_preset->get("notarization/api_key_id") == "") {
						err += TTR("Notarization: App Store Connect API key ID not specified.") + "\n";
						valid = false;
					}
				}
			}
			if (notary_tool == 2 && p_preset->get("notarization/apple_team_id") == "") {
				err += TTR("Notarization: Apple Team ID not specified.") + "\n";
				valid = false;
			}
		} else if (notary_tool == 1) {
			if (p_preset->get("notarization/api_uuid") == "") {
				err += TTR("Notarization: App Store Connect issuer ID name not specified.") + "\n";
				valid = false;
			}
			if (p_preset->get("notarization/api_key_id") == "") {
				err += TTR("Notarization: App Store Connect API key ID not specified.") + "\n";
				valid = false;