Remove assertion on refreshed result in TransportShardRefreshAction.UnpromotableReplicasRefreshProxy

Relates ES-10700

Author: tlrx

server/src/main/java/org/elasticsearch/action/admin/indices/refresh/TransportShardRefreshAction.java

@@ -125,7 +125,6 @@ public void onPrimaryOperationComplete(
             IndexShardRoutingTable indexShardRoutingTable,
             ActionListener<Void> listener
         ) {
-            assert replicaRequest.primaryRefreshResult.refreshed() : "primary has not refreshed";
             UnpromotableShardRefreshRequest unpromotableReplicaRequest = new UnpromotableShardRefreshRequest(
                 indexShardRoutingTable,
                 replicaRequest.primaryRefreshResult.primaryTerm(),