### 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
I = I->next();
	}
	String display_driver = "";
	String audio_driver = "";
	String project_path = ".";
	bool upwards = false;
	String debug_uri = "";
	bool skip_breakpoints = false;
	String main_pack;
	bool quiet_stdout = false;
	int rtm = -1;
	String remotefs;
	String remotefs_pass;
	Vector<String> breakpoints;
	bool use_custom_res = true;
	bool force_res = false;
	String default_renderer = "";
	String default_renderer_mobile = "";
	String renderer_hints = "";
	packed_data = PackedData::get_singleton();
	if (!packed_data) {
		packed_data = memnew(PackedData);
	}
#ifdef MINIZIP_ENABLED
	
	zip_packed_data = ZipArchive::get_singleton();
	
	if (!zip_packed_data) {
		zip_packed_data = memnew(ZipArchive);
	}