Update config_flow.py

Fix for Config flow that could not be loaded after update to HA 2025.12 (Issue #2124)

Author: rospogrigio

custom_components/localtuya/config_flow.py

@@ -393,7 +393,7 @@ class LocalTuyaOptionsFlowHandler(config_entries.OptionsFlow):
 
     def __init__(self, config_entry):
         """Initialize localtuya options flow."""
-        self.config_entry = config_entry
+        self._config_entry = config_entry
         # self.dps_strings = config_entry.data.get(CONF_DPS_STRINGS, gen_dps_strings())
         # self.entities = config_entry.data[CONF_ENTITIES]
         self.selected_device = None