Remove explicit casting to List when sorted() is applied (#12085)

sorted() returns a sorted list.
sorted(list(A)) is equivalent to sorted(A) no matter A is Tuple, List, or Set

Ref: https://docs.python.org/3/library/functions.html#sorted

airflow/www/views.py

@@ -1836,7 +1836,7 @@ def tree(self):
             )
         dag_runs = {dr.execution_date: alchemy_to_dict(dr) for dr in dag_runs}
 
-        dates = sorted(list(dag_runs.keys()))
+        dates = sorted(dag_runs.keys())
         max_date = max(dates) if dates else None
         min_date = min(dates) if dates else None
 
@@ -2143,7 +2143,7 @@ def duration(self, session=None):
                 y=scale_time_units(cumulative_y[task_id], cum_y_unit),
             )
 
-        dates = sorted(list({ti.execution_date for ti in task_instances}))
+        dates = sorted({ti.execution_date for ti in task_instances})
         max_date = max([ti.execution_date for ti in task_instances]) if dates else None
 
         session.commit()
@@ -2215,7 +2215,7 @@ def tries(self, session=None):
                 chart.add_serie(name=task.task_id, x=x_points, y=y_points)
 
         tis = dag.get_task_instances(start_date=min_date, end_date=base_date)
-        tries = sorted(list({ti.try_number for ti in tis}))
+        tries = sorted({ti.try_number for ti in tis})
         max_date = max([ti.execution_date for ti in tis]) if tries else None
         chart.create_y_axis('yAxis', format='.02f', custom_format=False, label='Tries')
         chart.axislist['yAxis']['axisLabelDistance'] = '-15'
@@ -2299,7 +2299,7 @@ def landing_times(self, session=None):
             )
 
         tis = dag.get_task_instances(start_date=min_date, end_date=base_date)
-        dates = sorted(list({ti.execution_date for ti in tis}))
+        dates = sorted({ti.execution_date for ti in tis})
         max_date = max([ti.execution_date for ti in tis]) if dates else None
 
         session.commit()

tests/build_provider_packages_dependencies.py

@@ -242,7 +242,7 @@ def insert_documentation(deps_dict: Dict[str, List[str]], res: List[str]):
         print(f"Total: {len(errors)} errors.")
     unique_sorted_dependencies: Dict[str, List[str]] = {}
     for key in sorted(dependencies.keys()):
-        unique_sorted_dependencies[key] = sorted(list(set(dependencies[key])))
+        unique_sorted_dependencies[key] = sorted(set(dependencies[key]))
     if provider_dependencies_file_name:
         with open(provider_dependencies_file_name, "w") as providers_file:
             json.dump(unique_sorted_dependencies, providers_file, indent=2)