### 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_
	if (!windows.has(last_focused_window)) {
		return; 
	}
	
	
	String text = p_text.replace("\r\n", "\n").replace("\n", "\r\n"); 
	if (!OpenClipboard(windows[last_focused_window].hWnd)) {
		ERR_FAIL_MSG("Unable to open clipboard.");
	}
	EmptyClipboard();
	Char16String utf16 = text.utf16();
	HGLOBAL mem = GlobalAlloc(GMEM_MOVEABLE, (utf16.length() + 1) * sizeof(WCHAR));
	ERR_FAIL_COND_MSG(mem == nullptr, "Unable to allocate memory for clipboard contents.");
	LPWSTR lptstrCopy = (LPWSTR)GlobalLock(mem);
	memcpy(lptstrCopy, utf16.get_data(), (utf16.length() + 1) * sizeof(WCHAR));
	GlobalUnlock(mem);
	SetClipboardData(CF_UNICODETEXT, mem);
	
	CharString utf8 = text.utf8();
	mem = GlobalAlloc(GMEM_MOVEABLE, utf8.length() + 1);
	ERR_FAIL_COND_MSG(mem == nullptr, "Unable to allocate memory for clipboard contents.");
	LPTSTR ptr = (LPTSTR)GlobalLock(mem);
	memcpy(ptr, utf8.get_data(), utf8.length());
	ptr[utf8.length()] = 0;
	GlobalUnlock(mem);
	SetClipboardData(CF_TEXT, mem);
	CloseClipboard();
}
String DisplayServerWindows::clipboard_get() const {