of course you don't have to reheat them.
You can use the meat for turkey salad sandwiches without heating first.
You can eat the meat cold.
The ONLY time youi have to heat food to a certain temp is when its raw and needs to be cooked to a safe temp. AFTER its cooked you can eat it straight out of the fridge if you want.
Think about it. Chicken salad, tuna salad, ham salad, cold meatloaf sandwiches, cold chicken or turkey sandwiches, chicken, ham or tuna is cold pasta salads. We have been eating cold left overs for centuries.