Add release note for #135051 (#135475) (#135628)

* Add release note for #135051

docs/changelog/135051.yaml

@@ -3,3 +3,13 @@ summary: Ban Limit + `MvExpand` before remote Enrich
 area: ES|QL
 type: bug
 issues: []
+highlight:
+  title: Prevent LIMIT + MV_EXPAND before remote ENRICH
+  body: |-
+    Queries using LIMIT followed by MV_EXPAND before a remote ENRICH can produce incorrect results due to distributed execution semantics.
+    These queries are now unsupported and produce an error. Example:
+    [source,yaml]
+    ----------------------------
+    FROM *:events | SORT @timestamp | LIMIT 2 | MV_EXPAND ip | ENRICH _remote:clientip_policy ON ip
+    ----------------------------
+    To avoid this error, reorder your query, for example by moving ENRICH earlier in the pipeline.