fix: nodelist sort by `viaMqtt`

app/src/main/java/com/geeksville/mesh/database/dao/NodeInfoDao.kt

@@ -69,7 +69,7 @@ interface NodeInfoDao {
                 ELSE hops_away
             END
         WHEN :sort = 'channel' THEN channel
-        WHEN :sort = 'via_mqtt' THEN long_name LIKE '%(MQTT)' -- viaMqtt
+        WHEN :sort = 'via_mqtt' THEN via_mqtt
         ELSE 0
     END ASC,
     last_heard DESC

app/src/main/java/com/geeksville/mesh/service/MeshService.kt

@@ -1394,8 +1394,8 @@ class MeshService : Service(), Logging {
                     if (isLicensed) clearPublicKey()
                     if (info.viaMqtt) longName = "$longName (MQTT)"
                 }
-                it.longName = info.user.longName
-                it.shortName = info.user.shortName
+                it.longName = it.user.longName
+                it.shortName = it.user.shortName
             }
 
             if (info.hasPosition()) {