Update lineup initialization to use 'Main' instead of 'Main Slate' for consistency in DK and FD lineup functions

src/streamlit_app.py

@@ -562,8 +562,8 @@ with app_load_reset_column:
         except:
             slate_names_fd = []
             slate_name_lookup_fd = {}
-        dk_lineups = init_DK_lineups('Regular', 'Main Slate', 'proj', 50, dk_showdown_db_translation, 25000, [])
-        fd_lineups = init_FD_lineups('Regular', 'Main Slate', 'proj', 50, fd_showdown_db_translation, 25000, [])
+        dk_lineups = init_DK_lineups('Regular', 'Main', 'proj', 50, dk_showdown_db_translation, 25000, [])
+        fd_lineups = init_FD_lineups('Regular', 'Main', 'proj', 50, fd_showdown_db_translation, 25000, [])
         for key in st.session_state.keys():
             del st.session_state[key]
 with app_view_site_column: