Issue description:

The Heat Generator when surrounded by lava should (according to the wiki, and the discussion in Issue #4697) produce 5J/t per side (assuming the default config). However it is producing considerably less than this. In a test world with just Mekanism and MekanismGenerators, I got the following results

Looking through the code for the Heat Generator, what seems to be happening is that it is creating 5 heat per tick per side (in the getBoost() method), then the heat dissipation simulation run, a chunk of the heat is dissipated and the remaining amount is used to generate electricity. This seems to explain the non-linear numbers I'm seeing as less heat is lost to the surrounding blocks when the surrounding blocks are lava, at least I think so.

This might be what's intended but it's resulting in very low outputs for passive generation.

Actually, I've just tested active generation, and there's similar behaviour. A generator is only producing 74.92 J/t, not the 150 I was expecting.

Steps to reproduce:

1. Create new world
2. Place heat generator surrounded by lava
3. Check energy output

Version (make sure you are on the latest version before reporting):

Forge: 14.23.5.2796
Mekanism: 9.4.13.249
Other relevant version:

The wiki is not well maintained, so treat its numbers as dubious at best

It does look to be intended, as the heat loss is part of the energy calculation