### 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
update_spinner->set_icon(gui_base->get_theme_icon("Progress" + itos(update_spinner_step + 1), SNAME("EditorIcons")));
				}
			}
			editor_selection->update();
			ResourceImporterTexture::get_singleton()->update_imports();
			if (settings_changed) {
				_update_title();
			}
			if (settings_changed) {
				_update_from_settings();
				settings_changed = false;
				emit_signal(SNAME("project_settings_changed"));
			}
			ResourceImporterTexture::get_singleton()->update_imports();
		} break;
		case NOTIFICATION_ENTER_TREE: {
			Engine::get_singleton()->set_editor_hint(true);
			Window *window = get_window();
			if (window) {
				
				window->connect("titlebar_changed", callable_mp(this, &EditorNode::_titlebar_resized));
				window->set_theme(theme);
			}
			OS::get_singleton()->set_low_processor_usage_mode_sleep_usec(int(EDITOR_GET("interface/editor/low_processor_mode_sleep_usec")));
			get_tree()->get_root()->set_as_audio_listener_3d(false);
			get_tree()->get_root()->set_as_audio_listener_2d(false);
			get_tree()->get_root()->set_snap_2d_transforms_to_pixel(false);
			get_tree()->get_root()->set_snap_2d_vertices_to_pixel(false);
			get_tree()->set_auto_accept_quit(false);
#ifdef ANDROID_ENABLED