TGReact loop

[jrood-nrel]

https://github.com/AMReX-Combustion/PeleC/blob/b3264ded05d82a8be7a9481a659e234e34def090/Exec/RegTests/TGReact/prob.cpp#L187-L189

Copilot found some unnecessary looping. It thinks it should be something like getLevel(lev).maxDerive(...) with a running max, but it's not obvious to me exactly what it should be.

[baperry2]

Yeah, this bit of code is definitely wrong as is.

It should look like what we do here: https://github.com/AMReX-Combustion/PeleC/blob/8c83f01b25f53368acc3718b0693caf4ac6e3c57/Source/SumIQ.cpp#L167

Or we could make the code more readable by just deriving a whole multifab and then using the multifab max command rather than doing a local max then manually doing the parallel communication for some reason.