ci: Update Feature Flags

Workflow run: https://github.com/HumanSignal/label-studio/actions/runs/14789718858

Author: robot-ci-heartex

label_studio/feature_flags.json

@@ -3581,7 +3581,7 @@
     },
     "fflag_fix_back_optic_1380_dashboard_task_chart_grouped_by_completed_at_reviewed_at_short": {
       "key": "fflag_fix_back_optic_1380_dashboard_task_chart_grouped_by_completed_at_reviewed_at_short",
-      "on": false,
+      "on": true,
       "prerequisites": [],
       "targets": [],
       "contextTargets": [],
@@ -3603,7 +3603,7 @@
       "trackEvents": false,
       "trackEventsFallthrough": false,
       "debugEventsUntilDate": null,
-      "version": 2,
+      "version": 3,
       "deleted": false
     },
     "fflag_fix_back_optic_1407_optimize_tasks_api_pagination_counts": {