### Godot version

3.5.1mono

### System information

windows10

### Issue description

Error message
 scene/main/node.cpp:1362 - Index p_index = 0 is out of bounds (data.children.size() = 0).
 scene/main/node.cpp:397 - Parameter "p_child" is null.
 scene/gui/tab_container.cpp:593 - Index p_current = 0 is out of bounds (get_tab_count() = 0).
See "Steps to reproduce for details"

### Steps to reproduce

Set an external text editor
Create a script
Drop the script to the built-in text editor like this image:
![image](https://user-images.githubusercontent.com/119792950/209504041-039f2620-5e42-4c0f-8c41-cd24486fb3d2.png)
And got error message:
 scene/main/node.cpp:1362 - Index p_index = 0 is out of bounds (data.children.size() = 0).
 scene/main/node.cpp:397 - Parameter "p_child" is null.
 scene/gui/tab_container.cpp:593 - Index p_current = 0 is out of bounds (get_tab_count() = 0).

### Minimal reproduction project

An empty project
c = tab_container->get_current_tab_control();
	if (Object::cast_to<ScriptEditorBase>(c)) {
		script_name_label->set_text(Object::cast_to<ScriptEditorBase>(c)->get_name());
		script_icon->set_texture(Object::cast_to<ScriptEditorBase>(c)->get_theme_icon());
		if (is_visible_in_tree()) {
			Object::cast_to<ScriptEditorBase>(c)->ensure_focus();
		}
		Ref<Script> scr = Object::cast_to<ScriptEditorBase>(c)->get_edited_resource();
		if (scr != nullptr) {
			notify_script_changed(scr);
		}
		Object::cast_to<ScriptEditorBase>(c)->validate();
	}
	if (Object::cast_to<EditorHelp>(c)) {
		script_name_label->set_text(Object::cast_to<EditorHelp>(c)->get_class());
		script_icon->set_texture(get_theme_icon(SNAME("Help"), SNAME("EditorIcons")));
		if (is_visible_in_tree()) {
			Object::cast_to<EditorHelp>(c)->set_focused();
		}
	}
	c->set_meta("__editor_pass", ++edit_pass);
	_update_history_arrows();
	_update_script_colors();
	_update_members_overview();
	_update_help_overview();
	_update_selected_editor_menu();
	_update_members_overview_visibility();
	_update_help_overview_visibility();
}
void ScriptEditor::_add_recent_script(String p_path) {