Tinkerswitch: make sure to set to False when unhappy

Author: bouwew

tests/test_smile.py

@@ -470,6 +470,7 @@ async def tinker_switch(
                 pw_exceptions.ResponseError,
             ):
                 if unhappy:
+                    switch_change = False
                     _LOGGER.info("  + failed as expected")
                 else:  # pragma: no cover
                     _LOGGER.info("  - failed unexpectedly")