### 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
}
			}
		}
		ret = unzGoToNextFile(src_pkg_zip);
	}
	// We're done with our source zip.
	unzClose(src_pkg_zip);
	if (!d_binary) {
		add_message(EXPORT_MESSAGE_ERROR, TTR("Export"), vformat(TTR("Requested template binary \"%s\" not d. It might be missing from your template archive."), binary_to_use));
		err = ERR_FILE_NOT_FOUND;
	}
	// Save console script.
	= OK) {
		int con_scr = p_preset->get("debug/export_console_script");
		if ((con_scr == 1 && p_debug) || (con_scr == 2)) {
			err = _export_debug_script(p_preset, pkg_name, tmp_app_path_name.get_file() + "/Contents/MacOS/" + pkg_name, scr_path);
			FileAccess::set_unix_permissions(scr_path, 0755);
			if (err != OK) {
				add_message(EXPORT_MESSAGE_ERROR, TTR("Export"), TTR("Could not create console script."));
			}
		}
	}
	= OK) {
		if (ep.step(TTR("Making PKG"), 1)) {
			return ERR_SKIP;
		}
		// See if we can code sign our new package.
		bool sign_enabled = (p_preset->get("codesign/codesign").operator int() > 0);
		bool  false;
		int codesign_tool = p_preset->get("codesign/codesign");