There are a couple of mod packs that include both Pam's Harvestcraft and Doggy Talents - I am referencing Roguelike Adventures and Dungeons 1.39

The issue is that the dogs created in Doggy Talents won't eat meat (heal) because it's not flagged as isWolfFood

percivalalb/DoggyTalents#55

I'm wondering if this can be addressed in a config file by developers or if it need to be addressed on a code-level

Since you obviously have an issue with reading and comprehending what you were told in Discord about this issue, this is something that would need to be resolved WITHIN the code itself as there is NO config option for this. Additionally, as I stated in Discord

there are already references in the code for isWolfFood as a boolean data field. This would indicate that the issue has already been addressed.

So I will ask you here, since you seem to be ignoring what you are being told in Discord, did you even bother to actually test this in RAD 1.39, or are you just bringing up a 3 year old issue without having done any research at all?