Unmutes elastic#116332 after backporting tests to v8.x

Author: carlosdelest

muted-tests.yml

@@ -219,9 +219,6 @@ tests:
 - class: org.elasticsearch.action.search.SearchQueryThenFetchAsyncActionTests
   method: testBottomFieldSort
   issue: https://github.com/elastic/elasticsearch/issues/116249
-- class: org.elasticsearch.backwards.MixedClusterClientYamlTestSuiteIT
-  method: test {p0=synonyms/90_synonyms_reloading_for_synset/Reload analyzers for specific synonym set}
-  issue: https://github.com/elastic/elasticsearch/issues/116332
 - class: org.elasticsearch.xpack.shutdown.NodeShutdownIT
   method: testAllocationPreventedForRemoval
   issue: https://github.com/elastic/elasticsearch/issues/116363