Fix timestamp method and loop variable order issues

Updated `datetime.utcnow()` to `datetime.now()` to align with local timezone handling. Corrected the order of unpacked variables in the loop to match the structure of `pucks_with_latest_events`.

backend/app/routers/puck.py

@@ -115,7 +115,7 @@ async def set_tell_positions(
                     puck_id=puck.id,
                     tell_position=None,
                     event_type="puck_removed",  # Event type set to "puck_removed"
-                    timestamp=datetime.utcnow(),
+                    timestamp=datetime.now(),
                 )
                 db.add(remove_event)
 
@@ -467,7 +467,7 @@ async def get_pucks_by_slot(slot_identifier: str, db: Session = Depends(get_db))
 
     # Prepare the final response
     results = []
-    for puck, event_type, dewar, tell_position in pucks_with_latest_events:
+    for puck, event_type, tell_position, dewar in pucks_with_latest_events:
         logger.debug(
             f"Puck ID: {puck.id}, Name: {puck.puck_name}, Event Type: {event_type}, "
             f"Tell Position: {tell_position}"