Also implement for legacy Anna

Author: bouwew

plugwise/legacy/smile.py

@@ -182,6 +182,10 @@ async def set_preset(self, _: str, preset: str) -> None:
     async def set_regulation_mode(self, mode: str) -> None:
         """Set-function placeholder for legacy devices."""
 
+    async def set_select(self, key: str, loc_id: str, option: str, name: str | None) -> None:
+        """Set the thermostat schedule option."""
+        await set_schedule_state("dummy", option, name)
+
     async def set_schedule_state(self, _: str, state: str, name: str | None) -> None:
         """Activate/deactivate the Schedule.