Revert "🐛Autoscaling: fixes unknown passing type to dask-scheduler (#8556)"

This reverts commit 4d1cccd.

Author: sanderegg

services/autoscaling/src/simcore_service_autoscaling/modules/dask.py

@@ -136,8 +136,7 @@ async def _list_cluster_known_tasks(
 ) -> _DaskClusterTasks:
     def _list_on_scheduler(
         dask_scheduler: distributed.Scheduler,
-    ) -> dict[str, Any]:
-        # NOTE: _DaskClusterTasks uses cannot be used here because of serialization issues
+    ) -> _DaskClusterTasks:
         worker_to_processing_tasks = defaultdict(list)
         unrunnable_tasks = {}
         for task_key, task_state in dask_scheduler.tasks.items():
@@ -154,10 +153,10 @@ def _list_on_scheduler(
                     task_state.resource_restrictions or {}
                 ) | {DASK_WORKER_THREAD_RESOURCE_NAME: 1}
 
-        return {
-            "processing": worker_to_processing_tasks,
-            "unrunnable": unrunnable_tasks,
-        }
+        return _DaskClusterTasks(
+            processing=worker_to_processing_tasks,  # type: ignore[typeddict-item]
+            unrunnable=unrunnable_tasks,  # type: ignore[typeddict-item]
+        )
 
     list_of_tasks: _DaskClusterTasks = await client.run_on_scheduler(_list_on_scheduler)
     _logger.debug("found tasks: %s", list_of_tasks)