fix MigrateThingDefinition wot validation issue

Author: hu-ahmed

things/service/src/main/java/org/eclipse/ditto/things/service/persistence/actors/ThingPersistenceActor.java

@@ -24,6 +24,8 @@
 import org.apache.pekko.japi.pf.ReceiveBuilder;
 import org.apache.pekko.persistence.RecoveryCompleted;
 import org.eclipse.ditto.base.model.acks.DittoAcknowledgementLabel;
+import org.eclipse.ditto.base.model.exceptions.DittoInternalErrorException;
+import org.eclipse.ditto.base.model.exceptions.DittoRuntimeException;
 import org.eclipse.ditto.base.model.exceptions.DittoRuntimeExceptionBuilder;
 import org.eclipse.ditto.base.model.headers.DittoHeaders;
 import org.eclipse.ditto.base.model.headers.LiveChannelTimeoutStrategy;
@@ -151,14 +153,26 @@ public void onQuery(final Command<?> command, final WithDittoHeaders response) {
     public void onStagedQuery(final Command<?> command, final CompletionStage<WithDittoHeaders> response,
             @Nullable final StartedSpan startedSpan) {
         final ActorRef sender = getSender();
-        response.thenAccept(r -> {
-            doOnQuery(command, r, sender);
+        response.handle((r, throwable) -> {
+            if (throwable != null ) {
+                final DittoRuntimeException exception = DittoRuntimeException.asDittoRuntimeException(throwable, t ->
+                        DittoInternalErrorException.newBuilder()
+                                .cause(t)
+                                .dittoHeaders(command.getDittoHeaders())
+                                .build()
+                );
+                notifySender(sender, exception);
+            } else {
+                doOnQuery(command, r, sender);
+            }
             if (startedSpan != null) {
                 startedSpan.finish();
             }
+            return null;
         });
     }
 
+
     private void doOnQuery(final Command<?> command, final WithDittoHeaders response, final ActorRef sender) {
         if (response.getDittoHeaders().didLiveChannelConditionMatch()) {
             final var liveChannelTimeoutStrategy = response.getDittoHeaders()