[mqtt.homeassistant] Make sensors compliant (#8591)

Signed-off-by: Jochen Klein <git@jochen.susca.de>

bundles/org.openhab.binding.mqtt.homie/src/main/java/org/openhab/binding/mqtt/homie/internal/handler/HomieThingHandler.java

@@ -13,6 +13,7 @@
 package org.openhab.binding.mqtt.homie.internal.handler;
 
 import java.util.List;
+import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ScheduledFuture;
 import java.util.function.Consumer;
@@ -246,7 +247,7 @@ public class HomieThingHandler extends AbstractMQTTThingHandler implements Devic
     }
 
     @Override
-    protected void updateThingStatus(boolean messageReceived, boolean availabilityTopicsSeen) {
+    protected void updateThingStatus(boolean messageReceived, Optional<Boolean> availabilityTopicsSeen) {
         // not used here
     }
 }