* Small cleanups to bluetooth internals
Improve the performance of _async_on_advertisement
Fixes
```
tests/components/bluetooth/test_models.py::test_ble_device_with_proxy_client_out_of_connections_uses_best_available
tests/components/bluetooth/test_models.py::test_ble_device_with_proxy_client_out_of_connections_uses_best_available_macos
/Users/bdraco/home-assistant/homeassistant/components/bluetooth/wrappers.py:226: FutureWarning: This method will be removed future version, pass the callback to the BleakClient constructor instead.
self._backend.set_disconnected_callback(
tests/components/bluetooth/test_models.py::test_ble_device_with_proxy_client_out_of_connections_uses_best_available_macos
/Users/bdraco/home-assistant/tests/components/bluetooth/test_models.py:506: FutureWarning: BLEDevice.metadata is deprecated and will be removed in a future version of Bleak, use AdvertisementData instead
switchbot_proxy_device_no_connection_slot.metadata["delegate"] = 0
tests/components/bluetooth/test_models.py::test_ble_device_with_proxy_client_out_of_connections_uses_best_available_macos
/Users/bdraco/home-assistant/tests/components/bluetooth/test_models.py:521: FutureWarning: BLEDevice.metadata is deprecated and will be removed in a future version of Bleak, use AdvertisementData instead
switchbot_proxy_device_has_connection_slot.metadata["delegate"] = 0
tests/components/bluetooth/test_models.py::test_ble_device_with_proxy_client_out_of_connections_uses_best_available_macos
/Users/bdraco/home-assistant/tests/components/bluetooth/test_models.py:535: FutureWarning: BLEDevice.metadata is deprecated and will be removed in a future version of Bleak, use AdvertisementData instead
switchbot_device.metadata["delegate"] = 0
```
* put back kwargs