SIENTIAPDE-1193

Update Gates activity and format_and_export_prediction workflow to use DATETIME_FORMAT_WITH_TZ for consistent timestamp handling

- Modified Gates activity to correctly handle the maximum timestamp without formatting it prematurely.
- Updated format_and_export_prediction workflow to utilize DATETIME_FORMAT_WITH_TZ for timestamp conversion.
- Enhanced tests to ensure timestamp conversion is applied consistently across workflows.

laborious/workflows/sub_workflows/format_and_export_prediction.py

@@ -5,7 +5,7 @@ with workflow.unsafe.imports_passed_through():
     from typing import Any
     from datetime import timedelta
     from sientia_do.temporal.policies import retry_policy
-    from sientia_do.temporal.constants import DATETIME_FORMAT
+    from sientia_do.temporal.constants import DATETIME_FORMAT_WITH_TZ
 
 
 @workflow.defn(name="format_and_export_prediction")
@@ -94,7 +94,7 @@ class FormatAndExportPrediction():
                 'data': prediction,
                 'timestamp_conversion': {
                     'column': 'timestamp',
-                    'format': DATETIME_FORMAT
+                    'format': DATETIME_FORMAT_WITH_TZ
                 }
             },
             retry_policy=retry_policy,