### 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 (!product_name.is_empty()) {
		args.push_back("--set-version-string");
		args.push_back("ProductName");
		args.push_back(product_name);
	}
	if (!file_description.is_empty()) {
		args.push_back("--set-version-string");
		args.push_back("FileDescription");
		args.push_back(file_description);
	}
	if (!copyright.is_empty()) {
		args.push_back("--set-version-string");
		args.push_back("LegalCopyright");
		args.push_back(copyright);
	}
	if (!trademarks.is_empty()) {
		args.push_back("--set-version-string");
		args.push_back("LegalTrademarks");
		args.push_back(trademarks);
	}
#ifndef WINDOWS_ENABLED
	
	args.push_front(rcedit_path);
	rcedit_path = wine_path;
#endif
	String str;
	Error err = OS::get_singleton()->execute(rcedit_path, args, &str, nullptr, true);
	if (FileAccess::exists(tmp_icon_path)) {
		DirAccess::remove_file_or_error(tmp_icon_path);
	}