Make the test deterministic (elastic#124204)

Author: astefan

muted-tests.yml

@@ -333,9 +333,6 @@ tests:
 - class: org.elasticsearch.smoketest.MlWithSecurityIT
   method: test {yaml=ml/3rd_party_deployment/Test start deployment fails while model download in progress}
   issue: https://github.com/elastic/elasticsearch/issues/120814
-- class: org.elasticsearch.xpack.esql.plugin.MatchOperatorIT
-  method: testScoring_Zero_OutsideQuery
-  issue: https://github.com/elastic/elasticsearch/issues/124132
 - class: org.elasticsearch.search.query.QueryPhaseTimeoutTests
   method: testScorerTimeoutPoints
   issue: https://github.com/elastic/elasticsearch/issues/124140

x-pack/plugin/esql/src/internalClusterTest/java/org/elasticsearch/xpack/esql/plugin/MatchOperatorIT.java

@@ -221,7 +221,7 @@ public void testScoringOutsideQuery() {
     public void testScoring_Zero_OutsideQuery() {
         var query = """
             FROM test METADATA _score
-            | SORT _score DESC
+            | SORT content DESC
             | KEEP content, _score
             """;