ESQL: Use DEFAULT_UNSORTABLE topN encoder for the TSID_DATA_TYPE

Author: leontyevdv

docs/changelog/137706.yaml

@@ -1,5 +1,5 @@
 pr: 137706
 summary: Use DEFAULT_UNSORTABLE topN encoder for the TSID_DATA_TYPE
-area: "ES|QL, TSDB, ES|QL"
+area: ES|QL
 type: bug
 issues: []

x-pack/plugin/esql/qa/testFixtures/src/main/resources/topN.csv-spec

@@ -181,8 +181,8 @@ FROM k8s METADATA _tsid
 
 events_received:long | @timestamp:datetime      | cluster:keyword | pod:keyword
 0                    | 2024-05-10T00:04:49.000Z | qa              | one
-0                    | 2024-05-10T00:02:43.000Z | staging         | two
-0                    | 2024-05-10T00:03:13.000Z | staging         | one
+0                    | 2024-05-10T00:09:58.000Z | qa              | three
 0                    | 2024-05-10T00:07:33.000Z | qa              | two
-0                    | 2024-05-10T00:05:16.000Z | prod            | one
+0                    | 2024-05-10T00:03:13.000Z | staging         | one
+0                    | 2024-05-10T00:09:34.000Z | staging         | one
 ;