### 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
}
			String rcodesign = EDITOR_GET("export/macos/rcodesign").operator String();
			if (rcodesign.is_empty()) {
				err += TTR("Notarization: rcodesign path is not set. Configure rcodesign path in the Editor Settings (Export > macOS > rcodesign).") + "\n";
				valid = false;
			}
		}
	} else {
		err += TTR("Warning: Notarization is disabled. The exported project will be blocked by Gatekeeper if it's downloaded from an unknown source.") + "\n";
		if (codesign_tool == 0) {
			err += TTR("Code signing is disabled. The exported project will not run on Macs with enabled Gatekeeper and Apple Silicon powered Macs.") + "\n";
		}
	}
	if (codesign_tool > 0) {
		if (ad_hoc) {
			err += TTR("Code signing: Using ad-hoc signature. The exported project will be blocked by Gatekeeper") + "\n";
		}
		if (codesign_tool == 3) {
			if (!FileAccess::exists("/usr/bin/codesign") && !FileAccess::exists("/bin/codesign")) {
				err += TTR("Code signing: Xcode command line tools are not installed.") + "\n";
				valid = false;
			}
		} else if (codesign_tool == 2) {
			String rcodesign = EDITOR_GET("export/macos/rcodesign").operator String();
			if (rcodesign.is_empty()) {
				err += TTR("Code signing: rcodesign path is not set. Configure rcodesign path in the Editor Settings (Export > macOS > rcodesign).") + "\n";
				valid = false;
			}
		}
		if ((bool)p_preset->get("codesign/entitlements/audio_input") && ((String)p_preset->get("privacy/microphone_usage_description")).is_empty()) {