Initialize sport selection in session state for contest analysis tab in app.py

- Added a check to ensure 'sport_select' is initialized in session state only if it is not already set, improving the robustness of the contest analysis functionality.
- This change enhances user experience by maintaining consistent state management across different tabs.

app.py

@@ -467,8 +467,8 @@ if selected_tab == 'Data Load':
         st.session_state['unique_players'] = [p for p in st.session_state['unique_players'] if p != 'nan']
 
 if selected_tab == 'Contest Analysis':
-    st.session_state['sport_select'] = st.session_state['sport_init']
-    st.session_state['type_var'] = st.session_state['type_init']
+    if 'sport_select' not in st.session_state:
+        st.session_state['sport_select'] = st.session_state['sport_init']
     
     if 'display_contest_info' in st.session_state:
         with st.expander("Info and filters"):