### 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/ingest/IngestService.java
if (currentPipeline == null) {
                    throw new IllegalArgumentException(
                        String.format(
                            Locale.ROOT,
                            "version conflict, required version [%s] for pipeline [%s] but no pipeline was found",
                            request.getVersion(),
                            request.getId()
                        )
                    );
                }
                final Integer currentVersion = currentPipeline.getVersion();
                if (Objects.equals(request.getVersion(), currentVersion) == false) {
                    throw new IllegalArgumentException(
                        String.format(
                            Locale.ROOT,
                            "version conflict, required version [%s] for pipeline [%s] but current version is [%s]",
                            request.getVersion(),
                            request.getId(),
                            currentVersion
                        )
                    );
                }
                var pipelineConfig = XContentHelper.convertToMap(request.getSource(), false, request.getXContentType()).v2();
                final Integer specifiedVersion = (Integer) pipelineConfig.get("version");
                if (pipelineConfig.containsKey("version") && Objects.equals(specifiedVersion, currentVersion)) {
                    throw new IllegalArgumentException(
                        String.format(
                            Locale.ROOT,
                            "cannot update pipeline [%s] with the same version [%s]",
                            request.getId(),