### 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.
const List<Ref<InputEvent>> *events = InputMap::get_singleton()->action_get_events(p_action);
	if (!events) {
		return Key::NONE;
	}
	
	const List<Ref<InputEvent>>::Element *first_event = events->front();
	if (!first_event) {
		return Key::NONE;
	}
	const Ref<InputEventKey> event = first_event->get();
	if (event.is_null()) {
		return Key::NONE;
	}
	
	if (event->get_physical_keycode() != Key::NONE) {
		return event->get_physical_keycode_with_modifiers();
	} else {
		return event->get_keycode_with_modifiers();
	}
}
void TextEdit::_push_current_op() {