### 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
resource_conversion_plugins.push_back(p_plugin);
}
void EditorNode::remove_resource_conversion_plugin(const Ref<EditorResourceConversionPlugin> &p_plugin) {
	resource_conversion_plugins.erase(p_plugin);
}
Vector<Ref<EditorResourceConversionPlugin>> EditorNode::find_resource_conversion_plugin(const Ref<Resource> &p_for_resource) {
	Vector<Ref<EditorResourceConversionPlugin>> ret;
	for (int i = 0; i < resource_conversion_plugins.size(); i++) {
		if (resource_conversion_plugins[i].is_valid() && resource_conversion_plugins[i]->handles(p_for_resource)) {
			ret.push_back(resource_conversion_plugins[i]);
		}
	}
	return ret;
}
void EditorNode::_bottom_panel_raise_toggled(bool p_pressed) {
	top_split->set_visible(!p_pressed);
}
void EditorNode::_update_renderer_color() {
	if (renderer->get_text() == "Forward+") {
		renderer->add_theme_color_override("font_color", Color::hex(0x5d8c3fff));
	}
	if (renderer->get_text() == "Mobile") {
		renderer->add_theme_color_override("font_color", Color::hex(0xa5557dff));
	}
	if (renderer->get_text() == "Compatibility") {
		renderer->add_theme_color_override("font_color", Color::hex(0x5586a4ff));
	}
}
void EditorNode::_renderer_selected(int p_which) {