### 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)

iconinfo.yHotspot = p_hotspot.y;
			iconinfo.hbmMask = mask;
			iconinfo.hbmColor = bitmap;
			cursors[p_shape] = CreateIconIndirect(&iconinfo);
		}
		Vector<Variant> params;
		params.push_back(p_cursor);
		params.push_back(p_hotspot);
		cursors_cache.insert(p_shape, params);
		if (p_shape == cursor_shape) {
			if (mouse_mode == MOUSE_MODE_VISIBLE || mouse_mode == MOUSE_MODE_CONFINED) {
				SetCursor(cursors[p_shape]);
			}
		}
		DeleteObject(mask);
		DeleteObject(bitmap);
		ReleaseDC(nullptr, dc);
	} else {
		
		if (cursors[p_shape]) {
			DestroyIcon(cursors[p_shape]);
		}
		cursors[p_shape] = nullptr;
		CursorShape c = cursor_shape;
		cursor_shape = CURSOR_MAX;
		cursor_set_shape(c);
		cursors_cache.erase(p_shape);
	}
}
bool DisplayServerWindows::get_swap_cancel_ok() {