Support no_status alias in TaskInstance state filter for REST API

Author: sunank200

airflow-core/src/airflow/api_fastapi/common/parameters.py

@@ -608,7 +608,7 @@ def _transform_ti_states(states: list[str] | None) -> list[TaskInstanceState | N
         return None
 
     try:
-        return [None if s in ("none", None) else TaskInstanceState(s) for s in states]
+        return [None if s in ("no_status", "none", None) else TaskInstanceState(s) for s in states]
     except ValueError:
         raise HTTPException(
             status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,

airflow-core/tests/unit/api_fastapi/core_api/routes/public/test_task_instances.py

@@ -964,6 +964,19 @@ class TestGetTaskInstances(TestTaskInstanceEndpoint):
                 3,
                 id="test state filter",
             ),
+            pytest.param(
+                [
+                    {"state": State.RUNNING},
+                    {"state": State.QUEUED},
+                    {"state": State.SUCCESS},
+                    {"state": State.NONE},
+                ],
+                False,
+                ("/dags/example_python_operator/dagRuns/TEST_DAG_RUN_ID/taskInstances"),
+                {"state": ["no_status"]},
+                1,
+                id="test no_status state filter",
+            ),
             pytest.param(
                 [
                     {"state": State.NONE},