[homekit] properly expose services from dummy accessories (#14169)

Signed-off-by: Cody Cutrer <cody@cutrer.us>

bundles/org.openhab.io.homekit/src/main/java/org/openhab/io/homekit/internal/accessories/DummyHomekitAccessory.java

@@ -14,6 +14,7 @@ package org.openhab.io.homekit.internal.accessories;
 
 import java.io.StringReader;
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
 import java.util.concurrent.CompletableFuture;
 
@@ -161,4 +162,9 @@ public class DummyHomekitAccessory implements HomekitAccessory {
     public CompletableFuture<String> getFirmwareRevision() {
         return CompletableFuture.completedFuture("none");
     }
+
+    @Override
+    public Collection<Service> getServices() {
+        return services;
+    }
 }