### Godot version

v4.0.beta.custom_build [fab9926a9]

### System information

Fedora 37

### Issue description

When creating a new inherited scene, saving the scene (for example with Ctrl+S) defaults to overwriting the scene being inherited, instead of prompting for a location to save to.

### Steps to reproduce

1. Create a new inherited scene
2. Press Ctrl+S

If the scene being inherited is imported (for example from a glTF), an error displays. If the inherited scene is a .tscn or .scn, it gets overridden by an inherited scene that tries to inherit itself, which is impossible and thus corrupt.

### Minimal reproduction project

N/A
file_menu->add_shortcut(ED_SHORTCUT_AND_COMMAND("editor/save_scene", TTR("Save Scene"), KeyModifierMask::CMD_OR_CTRL + Key::S), FILE_SAVE_SCENE);
	file_menu->add_shortcut(ED_SHORTCUT_AND_COMMAND("editor/save_scene_as", TTR("Save Scene As..."), KeyModifierMask::CMD_OR_CTRL + KeyModifierMask::SHIFT + Key::S), FILE_SAVE_AS_SCENE);
	file_menu->add_shortcut(ED_SHORTCUT_AND_COMMAND("editor/save_all_scenes", TTR("Save All Scenes"), KeyModifierMask::CMD_OR_CTRL + KeyModifierMask::SHIFT + KeyModifierMask::ALT + Key::S), FILE_SAVE_ALL_SCENES);
	file_menu->add_separator();
	file_menu->add_shortcut(ED_SHORTCUT_AND_COMMAND("editor/quick_open", TTR("Quick Open..."), KeyModifierMask::SHIFT + KeyModifierMask::ALT + Key::O), FILE_QUICK_OPEN);
	file_menu->add_shortcut(ED_SHORTCUT_AND_COMMAND("editor/quick_open_scene", TTR("Quick Open Scene..."), KeyModifierMask::CMD_OR_CTRL + KeyModifierMask::SHIFT + Key::O), FILE_QUICK_OPEN_SCENE);
	file_menu->add_shortcut(ED_SHORTCUT_AND_COMMAND("editor/quick_open_script", TTR("Quick Open Script..."), KeyModifierMask::CMD_OR_CTRL + KeyModifierMask::ALT + Key::O), FILE_QUICK_OPEN_SCRIPT);
	file_menu->add_separator();
	export_as_menu = memnew(PopupMenu);
	export_as_menu->set_name("Export");
	file_menu->add_child(export_as_menu);
	file_menu->add_submenu_item(TTR("Export As..."), "Export");
	export_as_menu->add_shortcut(ED_SHORTCUT("editor/export_as_mesh_library", TTR("MeshLibrary...")), FILE_EXPORT_MESH_LIBRARY);
	export_as_menu->connect("index_pressed", callable_mp(this, &EditorNode::_export_as_menu_option));
	file_menu->add_separator();
	file_menu->add_shortcut(ED_GET_SHORTCUT("ui_undo"), EDIT_UNDO, true);
	file_menu->add_shortcut(ED_GET_SHORTCUT("ui_redo"), EDIT_REDO, true);
	file_menu->add_separator();
	file_menu->add_shortcut(ED_SHORTCUT_AND_COMMAND("editor/reload_saved_scene", TTR("Reload Saved Scene")), EDIT_RELOAD_SAVED_SCENE);
	file_menu->add_shortcut(ED_SHORTCUT_AND_COMMAND("editor/close_scene", TTR("Close Scene"), KeyModifierMask::CMD_OR_CTRL + KeyModifierMask::SHIFT + Key::W), FILE_CLOSE);
	recent_scenes = memnew(PopupMenu);
	recent_scenes->set_name("RecentScenes");
	file_menu->add_child(recent_scenes);
	recent_scenes->connect("id_pressed", callable_mp(this, &EditorNode::_open_recent_scene));
	if (!global_menu || !OS::get_singleton()->has_feature("macos")) {
		
		file_menu->add_separator();
		file_menu->add_shortcut(ED_SHORTCUT_AND_COMMAND("editor/file_quit", TTR("Quit"), KeyModifierMask::CMD_OR_CTRL + Key::Q), FILE_QUIT, true);
	}
	project_menu = memnew(PopupMenu);