ref(seer): Move import to top level in lightweight RCA cluster task

No circular dependency exists, so the function-level import is
unnecessary.

Author: yuvmen

src/sentry/tasks/seer/lightweight_rca_cluster.py

@@ -1,6 +1,7 @@
 import logging
 
 from sentry.models.group import Group
+from sentry.seer.supergroups.lightweight_rca_cluster import trigger_lightweight_rca_cluster
 from sentry.tasks.base import instrumented_task
 from sentry.taskworker.namespaces import ingest_errors_postprocess_tasks
 
@@ -12,8 +13,6 @@
     namespace=ingest_errors_postprocess_tasks,
 )
 def trigger_lightweight_rca_cluster_task(group_id: int, **kwargs) -> None:
-    from sentry.seer.supergroups.lightweight_rca_cluster import trigger_lightweight_rca_cluster
-
     try:
         group = Group.objects.get(id=group_id)
     except Group.DoesNotExist: