### 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
for (Map.Entry<String, ? extends ToXContent> value : values.entrySet()) {
            field(value.getKey());
            value(value.getValue());
        }
        return endObject();
    }
    
    public XContentBuilder mapContents(Map<String, ?> values) throws IOException {
        return map(values, true, false);
    }
    private XContentBuilder map(Map<String, ?> values, boolean ensureNoSelfReferences, boolean writeStartAndEndHeaders) throws IOException {
        if (values == null) {
            return nullValue();
        }
        
        
        if (ensureNoSelfReferences) {
            ensureNoSelfReferences(values);
        }
        if (writeStartAndEndHeaders) {
            startObject();
        }
        for (Map.Entry<String, ?> value : values.entrySet()) {
            field(value.getKey());
            
            unknownValue(value.getValue(), false);
        }
        if (writeStartAndEndHeaders) {
            endObject();
        }