Allow unnerfing elemental reactor

Short Description

As per your suggestion. If accepted I will remove the code in SFW. Untested.

[ ] I have fully tested the proposed changes and promise that they will not break everything into chaos.
[ ] I have also tested the proposed changes in combination with base Slimefun and made sure nothing breaks/unexpected happens.
[x] I followed the existing code standards and didn't mess up the formatting.