### 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
}
			if (bHandled) {
				CloseTouchInputHandle((HTOUCHINPUT)lParam);
				return 0;
			}
		} break;
		case WM_DEVICECHANGE: {
			joypad->probe_joypads();
		} break;
		case WM_DESTROY: {
			Input::get_singleton()->flush_buffered_events();
		} break;
		case WM_SETCURSOR: {
			if (LOWORD(lParam) == HTCLIENT) {
				if (windows[window_id].window_has_focus && (mouse_mode == MOUSE_MODE_HIDDEN || mouse_mode == MOUSE_MODE_CAPTURED || mouse_mode == MOUSE_MODE_CONFINED_HIDDEN)) {
					
					if (hCursor == nullptr) {
						hCursor = SetCursor(nullptr);
					} else {
						SetCursor(nullptr);
					}
				} else {
					if (hCursor != nullptr) {
						CursorShape c = cursor_shape;
						cursor_shape = CURSOR_MAX;
						cursor_set_shape(c);
						hCursor = nullptr;
					}
				}