### Godot version

v4.0.beta.custom_build [0a9e6e478]

### System information

Windows 10, Vulkan, GTX 960 528.24

### Issue description

This [55420](https://github.com/godotengine/godot/issues/55420) issue seems that it is not completely solved since in the advanced importer the same thing continues to happen.

### Steps to reproduce

- Put a 3D model on the scene
- Open the advanced import
- Disable Auto LOD or whatever you want to change
- See how mesh doesn't change

### Minimal reproduction project

N/A
_update_pending_script_classes();
						if (changed) {
							emit_signal(SNAME("filesystem_changed"));
						}
						emit_signal(SNAME("sources_changed"), sources_changed.size() > 0);
						first_scan = false;
					}
				} else if (!scanning && thread.is_started()) {
					set_process(false);
					if (filesystem) {
						memdelete(filesystem);
					}
					filesystem = new_filesystem;
					new_filesystem = nullptr;
					thread.wait_to_finish();
					_update_scan_actions();
					_update_pending_script_classes();
					emit_signal(SNAME("filesystem_changed"));
					emit_signal(SNAME("sources_changed"), sources_changed.size() > 0);
					first_scan = false;
				}
				if (!is_processing() && scan_changes_pending) {
					scan_changes_pending = false;
					scan_changes();
				}
			}
		} break;
	}
}
bool EditorFileSystem::is_scanning() const {