src/vs/workbench/contrib/notebook/browser/contrib/find/findController.ts/NotebookFindWidget/dispose
class NotebookFindWidget:	override dispose() {
		this._notebookEditor?.removeClassName(FIND_SHOW_TRANSITION);
		this._notebookEditor?.removeClassName(FIND_HIDE_TRANSITION);
		this._findModel.dispose();
		super.dispose();
	}