### Godot version

v4.0.beta12.mono.official [3c9bf4bc2]

### System information

Windows 10, Forward+ (Vulkan), NVIDIA GeForce RTX 3070 (526.98)

### Issue description

The `Initial Screen` select dropdown provides 64 options for monitors when it should only provide options for what is available.  In my case, I'm only using two monitors so there should only be two monitors to choose from (excluding the Primary Monitor option of course).  Screenshot below.

![image](https://user-images.githubusercontent.com/1691061/213066149-b97d3220-9b23-4685-a155-ad2f48f96de3.png)


### Steps to reproduce

The issue appears to occur whether I'm using two monitors or one monitor.

---
1. Open `Project Settings`
2. Go to `Display` > `Window` > `Size`
3. Select the `Initial Screen` dropdown.
4. You will see the `Primary Monitor` option and 64 other monitor options as seen in the screenshot.

### Minimal reproduction project

N/A
ERR_FAIL_COND_V(!_start_success, false);
	bool hasicon = false;
	String positional_arg;
	String game_path;
	String script;
	bool check_only = false;
#ifdef TOOLS_ENABLED
	String doc_tool_path;
	bool doc_base = true;
	String _export_preset;
	bool export_debug = false;
	bool export_pack_only = false;
	bool converting_project = false;
	bool validating_converting_project = false;
#endif
	main_timer_sync.init(OS::get_singleton()->get_ticks_usec());
	List<String> args = OS::get_singleton()->get_cmdline_args();
	for (int i = 0; i < args.size(); i++) {
		/
		/
		/
		if (args[i] == "--check-only") {
			check_only = true;
#ifdef TOOLS_ENABLED
		} else if (args[i] == "--no-docbase") {
			doc_base = false;
		} else if (args[i] == "--convert-3to4") {