### 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.
context_menu_enabled = p_enable;
}
bool LineEdit::is_context_menu_enabled() {
	return context_menu_enabled;
}
bool LineEdit::is_menu_visible() const {
	return menu && menu->is_visible();
}
PopupMenu *LineEdit::get_menu() const {
	const_cast<LineEdit *>(this)->_ensure_menu();
	return menu;
}
void LineEdit::_editor_settings_changed() {
#ifdef TOOLS_ENABLED
	set_caret_blink_enabled(EDITOR_GET("text_editor/appearance/caret/caret_blink"));
	set_caret_blink_interval(EDITOR_GET("text_editor/appearance/caret/caret_blink_interval"));
#endif
}
void LineEdit::set_expand_to_text_length_enabled(bool p_enabled) {
	expand_to_text_length = p_enabled;
	update_minimum_size();
	set_caret_column(caret_column);
}
bool LineEdit::is_expand_to_text_length_enabled() const {
	return expand_to_text_length;
}
void LineEdit::set_clear_button_enabled(bool p_enabled) {