### 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
String rendering_method = "";
static int text_driver_idx = -1;
static int display_driver_idx = -1;
static int audio_driver_idx = -1;
static bool single_window = false;
static bool editor = false;
static bool project_manager = false;
static bool cmdline_tool = false;
static String locale;
static bool show_help = false;
static bool auto_quit = false;
static OS::ProcessID editor_pid = 0;
#ifdef TOOLS_ENABLED
static bool found_project = false;
static bool auto_build_solutions = false;
static String debug_server_uri;
static int converter_max_kb_file = 4 * 1024; 
static int converter_max_line_length = 100000;
HashMap<Main::CLIScope, Vector<String>> forwardable_cli_arguments;
#endif
bool use_startup_benchmark = false;
String startup_benchmark_file;
static DisplayServer::WindowMode window_mode = DisplayServer::WINDOW_MODE_WINDOWED;
static DisplayServer::ScreenOrientation window_orientation = DisplayServer::SCREEN_LANDSCAPE;
static DisplayServer::VSyncMode window_vsync_mode = DisplayServer::VSYNC_ENABLED;
static uint32_t window_flags = 0;
static Size2i window_size = Size2i(1152, 648);
static int init_screen = DisplayServer::SCREEN_PRIMARY;
static bool init_fullscreen = false;
static bool init_maximized = false;