fix(rebalance): fix changelog and version

apps/emqx_node_rebalance/src/emqx_node_rebalance.app.src

@@ -1,6 +1,6 @@
 {application, emqx_node_rebalance, [
     {description, "EMQX Node Rebalance"},
-    {vsn, "5.0.3"},
+    {vsn, "5.0.4"},
     {registered, [
         emqx_node_rebalance_sup,
         emqx_node_rebalance,

changes/ee/fix-11198.en.md

@@ -0,0 +1,2 @@
+Fix global rebalance status evaluation on replicant nodes.
+Previously, `/api/v5/load_rebalance/global_status` API method could return incomplete results if handled by a replicant node.