Mute org.elasticsearch.backwards.MixedClusterClientYamlTestSuiteIT test {p0=search.vectors/110_knn_query_with_filter/PRE_FILTER: knn query with internal filter as pre-filter} #119804

Author: elasticsearchmachine

muted-tests.yml

@@ -446,3 +446,6 @@ tests:
 - class: org.elasticsearch.xpack.restart.FullClusterRestartIT
   method: testTransformLegacyTemplateCleanup {cluster=UPGRADED}
   issue: https://github.com/elastic/elasticsearch/issues/119395
+- class: org.elasticsearch.backwards.MixedClusterClientYamlTestSuiteIT
+  method: "test {p0=search.vectors/110_knn_query_with_filter/PRE_FILTER: knn query with internal filter as pre-filter}"
+  issue: https://github.com/elastic/elasticsearch/issues/119804