settings: swap key and value in _build_map_from_range

src/settings/setting/base.py

@@ -156,7 +156,7 @@ class BaseSetting:
                 if not var:
                     continue
                 display_name = var[0].upper() + var[1:]
-                map_data[var] = display_name
+                map_data[display_name] = var
             return map_data
 
         if self.type == "number":