Code styling tweaks to the MQTT integration (#85463)

homeassistant/components/mqtt/__init__.py

homeassistant/components/mqtt/alarm_control_panel.py

homeassistant/components/mqtt/binary_sensor.py

homeassistant/components/mqtt/button.py

homeassistant/components/mqtt/camera.py

homeassistant/components/mqtt/client.py

homeassistant/components/mqtt/climate.py

homeassistant/components/mqtt/config_flow.py

homeassistant/components/mqtt/config_integration.py

homeassistant/components/mqtt/cover.py

homeassistant/components/mqtt/device_tracker.py

homeassistant/components/mqtt/fan.py

homeassistant/components/mqtt/humidifier.py

homeassistant/components/mqtt/lock.py

homeassistant/components/mqtt/mixins.py

homeassistant/components/mqtt/number.py

homeassistant/components/mqtt/scene.py

homeassistant/components/mqtt/select.py

homeassistant/components/mqtt/sensor.py

homeassistant/components/mqtt/siren.py