### Godot version

4.0 beta 15

### System information

Windows 10

### Issue description

It happened with both Google IME and MS-IME, and there was no problem until Beta14.
When typing Japanese characters, it is common to select a character from the suggestion window and then start typing the next character before confirming.
In this case, uncommitted characters are forcibly committed, and input of the next character begins.

**↓Beta15**

https://user-images.githubusercontent.com/186786/214753450-b493cca6-2644-4b3d-8cd2-660565cc3547.mp4

**↓Beta14**

https://user-images.githubusercontent.com/186786/214755127-dde819cc-4d63-403a-99b0-09821671f74e.mp4



### Steps to reproduce

It happened with both Google IME and MS-IME in beta15

### Minimal reproduction project

It is project independent and happens in the editor.
if (!wd.event_callback.is_null()) {
		Variant event = int(p_event);
		Variant *eventp = &event;
		Variant ret;
		Callable::CallError ce;
		wd.event_callback.callp((const Variant **)&eventp, 1, ret, ce);
	}
}
void DisplayServerWindows::_dispatch_input_events(const Ref<InputEvent> &p_event) {
	static_cast<DisplayServerWindows *>(get_singleton())->_dispatch_input_event(p_event);
}
void DisplayServerWindows::_dispatch_input_event(const Ref<InputEvent> &p_event) {
	_THREAD_SAFE_METHOD_
	if (in_dispatch_input_event) {
		return;
	}
	in_dispatch_input_event = true;
	Variant ev = p_event;
	Variant *evp = &ev;
	Variant ret;
	Callable::CallError ce;
	{
		List<WindowID>::Element *E = popup_list.back();
		if (E && Object::cast_to<InputEventKey>(*p_event)) {
			
			if (windows.has(E->get())) {