### Godot version

4.0

### System information

Windows 11

### Issue description

So on my monitor with 2560x1440 resolution retrieved by the `DisplayServer.get_window_size` method shows 2562x1442, which I think is incorrect. A similar result returned by `get_viewport().size`. But it's become correct if the `Resizable` property is turned on.

![image](https://user-images.githubusercontent.com/3036176/212492776-5c09b12e-d25a-4951-8392-54f5a5e3bece.png)


### Steps to reproduce

Create the project, add a label to observe the resolution text, set the full-screen mode in the project settings, toggle off the `Resizable` property, and run the project.

### Minimal reproduction project

[TestResolution.zip](https://github.com/godotengine/godot/files/10418682/TestResolution.zip)

TRACKMOUSEEVENT tme;
	tme.cbSize = sizeof(TRACKMOUSEEVENT);
	tme.dwFlags = TME_LEAVE;
	tme.hwndTrack = hWnd;
	tme.dwHoverTime = HOVER_DEFAULT;
	TrackMouseEvent(&tme);
}
bool DisplayServerWindows::has_feature(Feature p_feature) const {
	switch (p_feature) {
		case FEATURE_SUBWINDOWS:
		case FEATURE_TOUCHSCREEN:
		case FEATURE_MOUSE:
		case FEATURE_MOUSE_WARP:
		case FEATURE_CLIPBOARD:
		case FEATURE_CURSOR_SHAPE:
		case FEATURE_CUSTOM_CURSOR_SHAPE:
		case FEATURE_IME:
		case FEATURE_WINDOW_TRANSPARENCY:
		case FEATURE_HIDPI:
		case FEATURE_ICON:
		case FEATURE_NATIVE_ICON:
		case FEATURE_SWAP_BUFFERS:
		case FEATURE_KEEP_SCREEN_ON:
		case FEATURE_TEXT_TO_SPEECH:
			return true;
		default:
			return false;
	}
}
String DisplayServerWindows::get_name() const {