Fixed RRF YAML REST Test: `rrf with pinned retriever as a sub-retriever`#130402

mridula-s109 merged 9 commits intoelastic:mainelastic/elasticsearch:mainfrom

mridula-s109:SEARCH-1080-yaml-test-failure-rrf-with-pinned-retriever-as-a-sub-retrievermridula-s109/elasticsearch:SEARCH-1080-yaml-test-failure-rrf-with-pinned-retriever-as-a-sub-retrieverCopy head branch name to clipboard