### 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
return run_icon;
}
bool EditorExportPlatformMacOS::poll_export() {
	Ref<EditorExportPreset> preset;
	for (int i = 0; i < EditorExport::get_singleton()->get_export_preset_count(); i++) {
		Ref<EditorExportPreset> ep = EditorExport::get_singleton()->get_export_preset(i);
		if (ep->is_runnable() && ep->get_platform() == this) {
			preset = ep;
			break;
		}
	}
	int prev = menu_options;
	menu_options = (preset.is_valid() && preset->get("ssh_remote_deploy/enabled").operator bool());
	if (ssh_pid != 0 || !cleanup_commands.is_empty()) {
		if (menu_options == 0) {
			cleanup();
		} else {
			menu_options += 1;
		}
	}
	return menu_options != prev;
}
Ref<ImageTexture> EditorExportPlatformMacOS::get_option_icon(int p_index) const {
	return p_index == 1 ? stop_icon : EditorExportPlatform::get_option_icon(p_index);
}
int EditorExportPlatformMacOS::get_options_count() const {