[MM-59519] preserve DM/GM unread/read state over export and import (#27707)

server/channels/store/storetest/channel_store.go

@@ -7852,7 +7852,7 @@ func testChannelStoreExportAllDirectChannelsDeletedChannel(t *testing.T, rctx re
 	d1, nErr = ss.Channel().GetAllDirectChannelsForExportAfter(10000, strings.Repeat("0", 26), true)
 	assert.NoError(t, nErr)
 	assert.Len(t, d1, 1)
-	assert.Len(t, *d1[0].Members, 2)
+	assert.Len(t, d1[0].Members, 2)
 
 	// Manually truncate Channels table until testlib can handle cleanups
 	s.GetMasterX().Exec("TRUNCATE Channels")