### Description

This is a followup to #85926.

As part of the ingest processing pipeline, we call `CollectionUtils.ensureNoSelfReferences(...)` to ensure that a script processor didn't accidentally introduce a circular object. However, this check is only necessary if we know there was the potential for a circular option, which can only happen with either a custom processor (a plugin where we have no control), or a script processor. We should be able to only call this sanity check if we know we need it, rather than for every document.
libs/x-content/src/main/java/org/elasticsearch/xcontent/XContentBuilder.java
return this;
    }
    public XContentBuilder field(String name, Iterable<?> values) throws IOException {
        return field(name).value(values);
    }
    private XContentBuilder value(Iterable<?> values, boolean ensureNoSelfReferences) throws IOException {
        if (values == null) {
            return nullValue();
        }
        if (values instanceof Path) {
            
            value((Path) values);
        } else {
            
            
            if (ensureNoSelfReferences) {
                ensureNoSelfReferences(values);
            }
            startArray();
            for (Object value : values) {
                
                unknownValue(value, false);
            }
            endArray();
        }
        return this;
    }