chore: annotate important types (#36034)

Co-authored-by: Claude <noreply@anthropic.com>

superset/jinja_context.py

@@ -46,6 +46,7 @@ from superset.exceptions import (
 )
 from superset.extensions import feature_flag_manager
 from superset.sql.parse import Table
+from superset.superset_typing import Column, QueryObjectDict
 from superset.utils import json
 from superset.utils.core import (
     AdhocFilterClause,
@@ -1007,11 +1008,11 @@ def dataset_macro(
 
     columns = columns or [column.column_name for column in dataset.columns]
     metrics = [metric.metric_name for metric in dataset.metrics]
-    query_obj = {
+    query_obj: QueryObjectDict = {
         "is_timeseries": False,
         "filter": [],
         "metrics": metrics if include_metrics else None,
-        "columns": columns,
+        "columns": cast(list[Column], columns),
         "from_dttm": from_dttm,
         "to_dttm": to_dttm,
     }