message: fix(legacy-druid): undefined filter key
diff: @@ -1400,7 +1400,7 @@ class DruidDatasource(Model, BaseDatasource):
  if df is None:
  df = pd.DataFrame()
  qry["filter"] = self._add_filter_from_pre_query_data(
  - df, pre_qry["dimensions"], qry["filter"]
  + df, pre_qry["dimensions"], filters
  )
  qry["limit_spec"] = None
  if row_limit:
  