Add capabilities guard

Author: carlosdelest

x-pack/plugin/esql/qa/server/src/main/java/org/elasticsearch/xpack/esql/qa/rest/RestEsqlTestCase.java

@@ -688,6 +688,8 @@ public void testErrorMessageForInvalidIntervalParams() throws IOException {
     }
 
     public void testArrayValuesAllowedInValueParams() throws IOException {
+        assumeTrue("multivalues for params", EsqlCapabilities.Cap.QUERY_PARAMS_MULTI_VALUES.isEnabled());
+
         Map<String, Object> responseMap = runEsql(
             RequestObjectBuilder.jsonBuilder()
                 .query("row a = ?n1 | eval s = ?n2")
@@ -708,6 +710,8 @@ public void testArrayValuesAllowedInValueParams() throws IOException {
     }
 
     public void testErrorMessageForArrayValuesInNonValueParams() throws IOException {
+        assumeTrue("multivalues for params", EsqlCapabilities.Cap.QUERY_PARAMS_MULTI_VALUES.isEnabled());
+
         ResponseException re = expectThrows(
             ResponseException.class,
             () -> runEsql(