clear tagDetails in BulkUpload

Signed-off-by: Michael Hirsch <michael.hirsch@bosch-si.com>

hawkbit-ui/src/main/java/org/eclipse/hawkbit/ui/management/targettable/TargetBulkTokenTags.java

@@ -96,6 +96,7 @@ public class TargetBulkTokenTags extends AbstractTargetTagToken {
     @Override
     protected void populateContainer() {
         container.removeAllItems();
+        tagDetails.clear();
         for (final TargetTag tag : tagManagement.findAllTargetTags()) {
             setContainerPropertValues(tag.getId(), tag.getName(), tag.getColour());
         }