AAP-57614 fix: remove early dispatch, rely on events_processed_hook

Dispatching save_indirect_host_entries from artifacts_handler was
fundamentally flawed: it ran before job events were written to the DB
by the callback receiver, so the task found no events to process, set
event_queries_processed=True, and blocked all future processing.

Remove the dispatch and the now-unused import.  The existing
events_processed_hook (called from both the task runner after the
final save and the callback receiver after the wrapup event) handles
dispatching at the right time — after events are in the DB.

The direct DB write of event_queries_processed=False and
installed_collections (added in the previous commit) remains: it
ensures events_processed_hook sees the correct values regardless of
which call site runs first.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

awx/main/tasks/callback.py

@@ -6,7 +6,6 @@ from collections import deque
 from typing import Tuple, Optional
 
 from awx.main.models.event_query import EventQuery
-from awx.main.tasks.host_indirect import save_indirect_host_entries
 
 # Django
 from django.conf import settings
@@ -302,12 +301,16 @@ class RunnerCallback:
                 logger.warning(f'The file {COLLECTION_FILENAME} unexpectedly did not contain ansible_version')
 
             # Write event_queries_processed and installed_collections directly
-            # to the DB rather than using delay_update alone.  delay_update
-            # only writes when the final job status is saved, but
-            # save_indirect_host_entries needs both values in the DB
-            # immediately: event_queries_processed=False to pass the
-            # select_for_update gate, and installed_collections to find
-            # matching EventQuery records via fetch_job_event_query.
+            # to the DB instead of using delay_update.  delay_update defers
+            # writes until the final job status save, but
+            # events_processed_hook (called from both the task runner after
+            # the final save and the callback receiver after the wrapup
+            # event) needs event_queries_processed=False visible in the DB
+            # to dispatch save_indirect_host_entries.  The field defaults to
+            # True, so without a direct write the hook would see True and
+            # skip the dispatch.  installed_collections is also written
+            # directly so it is available if the callback receiver
+            # dispatches before the final save.
             from awx.main.models import Job
 
             db_updates = {'event_queries_processed': False}
@@ -315,14 +318,6 @@ class RunnerCallback:
                 db_updates['installed_collections'] = query_file_contents['installed_collections']
             Job.objects.filter(id=self.instance.id).update(**db_updates)
 
-            # Dispatch save_indirect_host_entries to process the EventQuery
-            # records created above. handle_success_and_failure_notifications
-            # may have already run and skipped dispatching because
-            # event_queries_processed defaults to True and artifacts_handler
-            # can run after the notification handler. The task's
-            # select_for_update lock prevents duplicate processing.
-            save_indirect_host_entries.delay(self.instance.id)
-
         self.artifacts_processed = True