Update position lock name mapping in Streamlit app to use 'pos_designation' for improved accuracy in player rankings.

src/streamlit_app.py

@@ -449,7 +449,7 @@ def main():
     final_df = assign_vorp_roster(position_df, halfPpr_rv, custom_roster_rv, user_league_settings, user_pos_vorp_limiters)
     final_df = final_df.drop(columns=['SR_ID'], axis=1)
     final_df['scoring_rank'] = final_df['Name'].map(orig_rank_dict)
-    final_df['pos_lock_name'] = final_df['scoring_rank'].map(pos_des_dict)
+    final_df['pos_lock_name'] = final_df['pos_designation'].map(pos_des_dict)
     
     # Display results
     st.header("Player Rankings")