Pass partition to intention match query

agent/proxycfg/connect_proxy.go

@@ -59,6 +59,7 @@ func (s *handlerConnectProxy) initialize(ctx context.Context) (ConfigSnapshot, e
 			Entries: []structs.IntentionMatchEntry{
 				{
 					Namespace: s.proxyID.NamespaceOrDefault(),
+					Partition: s.proxyID.PartitionOrDefault(),
 					Name:      s.proxyCfg.DestinationServiceName,
 				},
 			},

agent/proxycfg/terminating_gateway.go

@@ -121,6 +121,7 @@ func (s *handlerTerminatingGateway) handleUpdate(ctx context.Context, u cache.Up
 						Entries: []structs.IntentionMatchEntry{
 							{
 								Namespace: svc.Service.NamespaceOrDefault(),
+								Partition: svc.Service.PartitionOrDefault(),
 								Name:      svc.Service.Name,
 							},
 						},