Fixed list not getting written to HashMap

src/main/java/eu/ruekov/ruakij/LinkedBeaconTeleporters/linkedBeaconTeleporter/LinkedBeaconTeleporterManager.java

@@ -82,6 +82,7 @@ public class LinkedBeaconTeleporterManager {
         if(lbtBlocks == null){
             // Create empty if not found
             lbtBlocks = new ArrayList<>();
+            linkedBeaconTeleporterById.put(lbtItem.teleporterId(), lbtBlocks);
         }
 
         // Block from item