Batch-load related data in actions run, job, and task API endpoints (#37032)

Avoid per-item DB queries in ListRuns, ListJobs, and ListActionTasks by
batch-loading trigger users, repositories, and task attributes before
the conversion loop. Remove ReferencesGitRepo from the /actions route
group since no task/run endpoints use it.

Added tests for these endpoints as well.

---------

Signed-off-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Claude (Opus 4.7) <noreply@anthropic.com>

services/convert/action_test.go

@@ -115,12 +115,12 @@ func TestToActionWorkflowRun_UsesTriggerEvent(t *testing.T) {
 
 	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 2})
 	run := unittest.AssertExistsAndLoadBean(t, &actions_model.ActionRun{ID: 803})
-
+	run.Repo = repo
 	// Scheduled runs keep Event as the registration event (push) and use TriggerEvent as the real trigger.
 	run.Event = "push"
 	run.TriggerEvent = "schedule"
 
-	apiRun, err := ToActionWorkflowRun(t.Context(), repo, run, nil)
+	apiRun, err := ToActionWorkflowRun(t.Context(), run, nil)
 	require.NoError(t, err)
 	assert.Equal(t, "schedule", apiRun.Event)
 }