Add test

Author: dnhatn

x-pack/plugin/esql/compute/src/test/java/org/elasticsearch/compute/operator/TimeSeriesAggregationOperatorTests.java

@@ -277,13 +277,13 @@ public void close() {
             between(1, 100)
         ).get(ctx);
 
-        // tsid, bucket, rate[0][0],rate[0][1],rate[0][2], grouping1, grouping2
+        // tsid, bucket, rate[0][0],rate[0][1],rate[0][2],rate[0][3], grouping1, grouping2
         Operator intermediateAgg = new TimeSeriesAggregationOperatorFactories.Intermediate(
             0,
             1,
             rounding,
-            IntStream.range(0, nonBucketGroupings.size()).mapToObj(n -> new BlockHash.GroupSpec(5 + n, ElementType.BYTES_REF)).toList(),
-            List.of(new SupplierWithChannels(new RateLongAggregatorFunctionSupplier(unitInMillis), List.of(2, 3, 4))),
+            IntStream.range(0, nonBucketGroupings.size()).mapToObj(n -> new BlockHash.GroupSpec(6 + n, ElementType.BYTES_REF)).toList(),
+            List.of(new SupplierWithChannels(new RateLongAggregatorFunctionSupplier(unitInMillis), List.of(2, 3, 4, 5))),
             List.of(),
             between(1, 100)
         ).get(ctx);