### 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
Window *get_parent_visible_window() const;
	Viewport *get_parent_viewport() const;
	void popup(const Rect2i &p_rect = Rect2i());
	void popup_on_parent(const Rect2i &p_parent_rect);
	void popup_centered_ratio(float p_ratio = 0.8);
	void popup_centered(const Size2i &p_minsize = Size2i());
	void popup_centered_clamped(const Size2i &p_size = Size2i(), float p_fallback_ratio = 0.75);
	Size2 get_contents_minimum_size() const;
	void grab_focus();
	bool has_focus() const;
	void set_layout_direction(LayoutDirection p_direction);
	LayoutDirection get_layout_direction() const;
	bool is_layout_rtl() const;
	void set_auto_translate(bool p_enable);
	bool is_auto_translating() const;
	_FORCE_INLINE_ String atr(const String p_string) const { return is_auto_translating() ? tr(p_string) : p_string; };