Add calc_toggle management in app.py for session state tracking

- Introduced a new session state variable 'calc_toggle' in app.py to track calculation states when specific entry names are selected, enhancing user experience and session state management during the name matching process.

app.py

@@ -121,6 +121,7 @@ with tab2:
                         # Apply entry name filter if specific entries are selected
                         if entry_parse_var == 'Specific' and entry_names:
                             working_df = working_df[working_df['BaseName'].isin(entry_names)]
+                            st.session_state['calc_toggle'] = True
 
         if type_var == 'Classic':
             working_df['stack'] = working_df.apply(