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

* fixed failing pinned retriever test

* Update docs/changelog/130402.yaml

* Delete docs/changelog/130402.yaml

* Worked on the PR comments

* Fixed the Match_none

* space format

* space format

Author: mridula-s109

muted-tests.yml

@@ -530,9 +530,6 @@ tests:
 - class: org.elasticsearch.index.store.FsDirectoryFactoryTests
   method: testPreload
   issue: https://github.com/elastic/elasticsearch/issues/129852
-- class: org.elasticsearch.xpack.rank.rrf.RRFRankClientYamlTestSuiteIT
-  method: test {yaml=rrf/950_pinned_interaction/rrf with pinned retriever as a sub-retriever}
-  issue: https://github.com/elastic/elasticsearch/issues/129845
 - class: org.elasticsearch.xpack.test.rest.XPackRestIT
   method: test {p0=esql/60_usage/Basic ESQL usage output (telemetry) non-snapshot version}
   issue: https://github.com/elastic/elasticsearch/issues/129888

x-pack/plugin/rank-rrf/src/yamlRestTest/resources/rest-api-spec/test/rrf/950_pinned_interaction.yml

@@ -80,7 +80,7 @@ setup:
                 -
                   standard:
                     query:
-                      match: { text: "document" }
+                      match_none: {}
                 -
                   pinned:
                     ids: ["doc4", "doc5"]
@@ -90,9 +90,6 @@ setup:
                           match: { text: "document" }
 
   - match: { hits.total.value: 5 }
-  - match: { hits.hits.0._id: doc1 }
-  - lt: { hits.hits.0._score: 100.0 }
-  - match: { hits.hits.1._id: doc4 }
-  - match: { hits.hits.2._id: doc5 }
-
+  - match: { hits.hits.0._id: doc4 }
+  - match: { hits.hits.1._id: doc5 }