### 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.
return language;
}
void LineEdit::set_draw_control_chars(bool p_draw_control_chars) {
	if (draw_control_chars != p_draw_control_chars) {
		draw_control_chars = p_draw_control_chars;
		if (menu && menu->get_item_index(MENU_DISPLAY_UCC) >= 0) {
			menu->set_item_checked(menu->get_item_index(MENU_DISPLAY_UCC), draw_control_chars);
		}
		_shape();
		queue_redraw();
	}
}
bool LineEdit::get_draw_control_chars() const {
	return draw_control_chars;
}
void LineEdit::set_structured_text_bidi_override(TextServer::StructuredTextParser p_parser) {
	if (st_parser != p_parser) {
		st_parser = p_parser;
		_shape();
		queue_redraw();
	}
}
TextServer::StructuredTextParser LineEdit::get_structured_text_bidi_override() const {
	return st_parser;
}
void LineEdit::set_structured_text_bidi_override_options(Array p_args) {