### 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
if (desktop_folder_usage_descriptions.has(lang)) {
				f->store_line("NSDesktopFolderUsageDescription = \"" + desktop_folder_usage_descriptions[lang].operator String() + "\";");
			}
			if (documents_folder_usage_descriptions.has(lang)) {
				f->store_line("NSDocumentsFolderUsageDescription = \"" + documents_folder_usage_descriptions[lang].operator String() + "\";");
			}
			if (downloads_folder_usage_descriptions.has(lang)) {
				f->store_line("NSDownloadsFolderUsageDescription = \"" + downloads_folder_usage_descriptions[lang].operator String() + "\";");
			}
			if (network_volumes_usage_descriptions.has(lang)) {
				f->store_line("NSNetworkVolumesUsageDescription = \"" + network_volumes_usage_descriptions[lang].operator String() + "\";");
			}
			if (removable_volumes_usage_descriptions.has(lang)) {
				f->store_line("NSRemovableVolumesUsageDescription = \"" + removable_volumes_usage_descriptions[lang].operator String() + "\";");
			}
			if (copyrights.has(lang)) {
				f->store_line("NSHumanReadableCopyright = \"" + copyrights[lang].operator String() + "\";");
			}
		}
	}
	// Now process our template.
	bool d_binary = false;
	while (ret == UNZ_OK && err == OK) {
		// Get filename.
		unz_file_info info;
		char fname[16384];
		ret = unzGetCurrentFileInfo(src_pkg_zip, &info, fname, 16384, nullptr, 0, nullptr, 0);
		if (ret != UNZ_OK) {
			break;
		}