### 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 (p_preset) {
		int codesign_tool = p_preset->get("codesign/codesign");
		switch (codesign_tool) {
			case 1: { 
				if (p_option == "codesign/identity" || p_option == "codesign/certificate_file" || p_option == "codesign/certificate_password" || p_option == "codesign/custom_options") {
					return false;
				}
			} break;
			case 2: { 
				if (p_option == "codesign/identity") {
					return false;
				}
			} break;
#ifdef MACOS_ENABLED
			case 3: { 
				if (p_option == "codesign/certificate_file" || p_option == "codesign/certificate_password") {
					return false;
				}
			} break;
#endif
			default: { 
				if (p_option == "codesign/identity" || p_option == "codesign/certificate_file" || p_option == "codesign/certificate_password" || p_option == "codesign/custom_options" || p_option.begins_with("codesign/entitlements")) {
					return false;
				}
			} break;
		}