Update base position requirements in Streamlit app to use default values, simplifying the calculation process for position requirements.

src/streamlit_app.py

@@ -396,7 +396,7 @@ def main():
     position_df = create_position_frames(projections_df, ranks_dict)
     
     # Calculate position requirements
-    base_pos_reqs = designate_base_position_reqs(base_settings, user_flex_percentiles, user_flex_multipliers)
+    base_pos_reqs = designate_base_position_reqs()
     custom_pos_reqs = designate_custom_position_reqs(user_league_settings, user_flex_percentiles, user_flex_multipliers)
     
     # Calculate replacement values