Use _get_reconfigure_entry in tado (#127311)

homeassistant/components/tado/config_flow.py

@@ -74,7 +74,7 @@ class TadoConfigFlow(ConfigFlow, domain=DOMAIN):
     """Handle a config flow for Tado."""
 
     VERSION = 1
-    config_entry: ConfigEntry | None
+    config_entry: ConfigEntry
 
     async def async_step_user(
         self, user_input: dict[str, Any] | None = None
@@ -121,9 +121,7 @@ class TadoConfigFlow(ConfigFlow, domain=DOMAIN):
         self, entry_data: Mapping[str, Any]
     ) -> ConfigFlowResult:
         """Handle a reconfiguration flow initialized by the user."""
-        self.config_entry = self.hass.config_entries.async_get_entry(
-            self.context["entry_id"]
-        )
+        self.config_entry = self._get_reconfigure_entry()
         return await self.async_step_reconfigure_confirm()
 
     async def async_step_reconfigure_confirm(
@@ -131,7 +129,6 @@ class TadoConfigFlow(ConfigFlow, domain=DOMAIN):
     ) -> ConfigFlowResult:
         """Handle a reconfiguration flow initialized by the user."""
         errors: dict[str, str] = {}
-        assert self.config_entry
 
         if user_input is not None:
             user_input[CONF_USERNAME] = self.config_entry.data[CONF_USERNAME]