Fix transport bee level initialization

[cristian-maxim]

I was having issues with trying to use this mod when doing a simple setup for testing cargo ports
I found a related bug report here with the same behavior that happened to me: #49

I tried to see if i can modify the code to make it work for me and not crash and decided to do the fork here with the fix.

Note:

• not familiar with Java / Kotlin code so i decided to use AI to investigate the issue and see the minimal possible change for this issue. Since i do not have a complicated setup on my save to test against,
• I only managed to test setting this up with: chest, vault, cargo ports and to see that the bee tries to pick up and transport the cargo