### Godot version

v4.0.stable.official [92bee43ad]

### System information

Linux - v4.0.stable.official [92bee43ad]

### Issue description

It gives you the possibility of removing unexisting key/value pairs from a dictionary.

### Steps to reproduce

![image](https://github.com/godotengine/godot/assets/69520693/35beadbe-bfdd-4176-9b26-222bbf69cafa)
![image](https://github.com/godotengine/godot/assets/69520693/7ed647e0-a2af-4e58-9f00-f77b7bc7bb02)
![image](https://github.com/godotengine/godot/assets/69520693/f08bf824-8408-45eb-bb84-f1dc7e19e392)


### Minimal reproduction project

N/A
value = dict.get_value_at_index(i + offset);
			EditorProperty *prop = memnew(EditorPropertyText);
			prop->set_object_and_property(object.ptr(), prop_name);
			int remove_index = 0;
			String cs = key.get_construct_string();
			prop->set_label(cs);
			prop->set_tooltip_text(cs);
			remove_index = i + offset;
			prop->set_selectable(false);
			prop->connect("property_changed", callable_mp(this, &EditorPropertyLocalizableString::_property_changed));
			prop->connect("object_id_selected", callable_mp(this, &EditorPropertyLocalizableString::_object_id_selected));
			HBoxContainer *hbox = memnew(HBoxContainer);
			property_vbox->add_child(hbox);
			hbox->add_child(prop);
			prop->set_h_size_flags(SIZE_EXPAND_FILL);
			Button *edit_btn = memnew(Button);
			edit_btn->set_icon(get_theme_icon(SNAME("Remove"), SNAME("EditorIcons")));
			hbox->add_child(edit_btn);
			edit_btn->connect("pressed", callable_mp(this, &EditorPropertyLocalizableString::_remove_item).bind(edit_btn, remove_index));
			prop->update_property();
		}
		if (page_index == max_page) {
			button_add_item = EditorInspector::create_inspector_action_button(TTR("Add Translation"));
			button_add_item->set_icon(get_theme_icon(SNAME("Add"), SNAME("EditorIcons")));
			button_add_item->connect("pressed", callable_mp(this, &EditorPropertyLocalizableString::_add_locale_popup));
			property_vbox->add_child(button_add_item);
		}
		updating = false;
	} else {
		if (container) {