### Godot version

v4.0.beta15.official [4fa6edc88]

### System information

Windows 10

### Issue description

I use a custom keyboard layout (I made it myself), and it has «dead keys» (just like International keyboard layouts have). For example, if I press `'`, nothing happens, but if I press `a` after that, I'll get `á`. If I press `'` and `Space`, I'll get just `'`. And with my layout:
If I press `Shift + .` and then `a`, I will get `ᵄ`.
If I press `Shift + .` and then `Space`, I will get `>`.
If I press `Shift + [` and then `5`, I will get `₅`.
If I press `Shift + [` and then `Space`, I will get `{`.
In beta 14 and before, everything worked fine, but in beta 15 when I press `Shift + .` and `Space`, just nothing happens, I don't get `>`. Same for `Shift + [` and `Space`, I don't get `>`. It seems the problem is with `Shift`, because I still can type `á` (`'` and `a`) or `'` (`'` and `Space`), but not `ä` (`Shift + '` and `a`) or `"` (`Shift + '` and `Space`). In the latter cases I get `á` and `'` as if `Shift` were never pressed.

### Steps to reproduce

Install/add US International keyboard layout or [Extended Latin keyboard layout](https://github.com/godotengine/godot/files/10494466/Layouts.zip) (just run `Extended Latin\ExtLat6\setup.exe`).
Open script editor.
Press `Shift + '`.
Then press `a`.

### Minimal reproduction project

N/A
_THREAD_SAFE_METHOD_
	ERR_FAIL_COND(!windows.has(p_window));
	WindowData &wd = windows[p_window];
	if (wd.fullscreen || wd.maximized) {
		return;
	}
	Point2i offset = _get_screens_origin();
	RECT rc;
	rc.left = p_position.x + offset.x;
	rc.right = p_position.x + wd.width + offset.x;
	rc.bottom = p_position.y + wd.height + offset.y;
	rc.top = p_position.y + offset.y;
	const DWORD style = GetWindowLongPtr(wd.hWnd, GWL_STYLE);
	const DWORD exStyle = GetWindowLongPtr(wd.hWnd, GWL_EXSTYLE);
	AdjustWindowRectEx(&rc, style, false, exStyle);
	MoveWindow(wd.hWnd, rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, TRUE);
	
	if (mouse_mode == MOUSE_MODE_CONFINED || mouse_mode == MOUSE_MODE_CONFINED_HIDDEN) {
		RECT rect;
		GetClientRect(wd.hWnd, &rect);
		ClientToScreen(wd.hWnd, (POINT *)&rect.left);
		ClientToScreen(wd.hWnd, (POINT *)&rect.right);
		ClipCursor(&rect);
	}
	wd.last_pos = p_position;
	_update_real_mouse_position(p_window);
}
void DisplayServerWindows::window_set_exclusive(WindowID p_window, bool p_exclusive) {