[9.2] Removing elastic reranker chunking feature flag and allow return_documents to be false (#136045)#136222

elasticsearchmachine merged 1 commit intoelastic:9.2elastic/elasticsearch:9.2from

dan-rubinstein:backport/9.2/pr-136045dan-rubinstein/elasticsearch:backport/9.2/pr-136045Copy head branch name to clipboard