fix(batch): create empty EnumSet via noneOf

Author: bevzzz

src/main/java/io/weaviate/client6/v1/api/collections/batch/BatchContext.java

@@ -531,7 +531,9 @@ enum Action {
      */
     protected BaseState(String name, Action... permitted) {
       this.name = name;
-      this.permitted = EnumSet.copyOf(Arrays.asList(requireNonNull(permitted, "actions is null")));
+      this.permitted = requireNonNull(permitted, "actions is null").length == 0
+          ? EnumSet.noneOf(Action.class)
+          : EnumSet.copyOf(Arrays.asList(permitted));
     }
 
     @Override