Change infer radius to not have a preferred infer method

[SherelynA]

Currently, the infer_radius has a preference for determining it from the lbol, but it should be what it was before of None. So, there is not preference and the user can choose. Trying to run an sed, and testing out the new version, and it immediately gives me a radius based on the lbol and not the evo models like I would prefer.

[hover2pi]

Are you saying the default is not what you would prefer? Or is setting the infer_from keyword not changing it from the default method?

[SherelynA]

@hover2pi Mmm, while it is not what I prefer, the issues I am having is that at the beginning of the sed I provide an evo model, yet it still provides the infer radius from lbol when I run .results or make_sed(), and I have to then run infer_radius(from='evo_model') and then run .results or make_sed() again to make sure I get the teff based on the evo model radius and not the lbol inferred radius. I don't know it just seemed a bit backward.