### 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.
server/src/main/java/org/elasticsearch/action/index/IndexRequest.java
public String routing() {
        return this.routing;
    }
    /**
     * Sets the ingest pipeline to be executed before indexing the document
     */
    public IndexRequest setPipeline(String pipeline) {
        this.pipeline = pipeline;
        return this;
    }
    /**
     * Returns the ingest pipeline to be executed before indexing the document
     */
    public String getPipeline() {
        return this.pipeline;
    }
    /**
     * Sets the final ingest pipeline to be executed before indexing the document.
     *
     * @param finalPipeline the name of the final pipeline
     * @return this index request
     */
    public IndexRequest setFinalPipeline(final String finalPipeline) {
        this.finalPipeline = finalPipeline;
        return this;
    }
    /**
     * Returns the final ingest pipeline to be executed before indexing the document.
     *
     * @return the name of the final pipeline