### 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
nullValue();
            return;
        }
        Writer writer = WRITERS.get(value.getClass());
        if (writer != null) {
            writer.write(this, value);
        } else if (value instanceof Path) {
            
            value((Path) value);
        } else if (value instanceof Map) {
            @SuppressWarnings("unchecked")
            final Map<String, ?> valueMap = (Map<String, ?>) value;
            map(valueMap, ensureNoSelfReferences, true);
        } else if (value instanceof Iterable) {
            value((Iterable<?>) value, ensureNoSelfReferences);
        } else if (value instanceof Object[]) {
            values((Object[]) value, ensureNoSelfReferences);
        } else if (value instanceof ToXContent) {
            value((ToXContent) value);
        } else if (value instanceof Enum<?>) {
            
            value(Objects.toString(value));
        } else {
            throw new IllegalArgumentException("cannot write xcontent for unknown value of type " + value.getClass());
        }
    }
    
    
    
    public XContentBuilder field(String name, ToXContent value) throws IOException {