I'm a relatively new brewer, and because of space limitations, I actually bottle condition in my uninsulated garage. With summer approaching, that garage is going to get nice and toasty sometimes. I'm not terribly worried though.
I could be wrong, and for those with more knowledge, please feel free to correct me, but I look at it this way...
Leaving it a little too cold could slow down the yeast, just like with the primary fermentation. Leaving it a little too warm could produce an off flavor, I would think, just like a primary fermentation, but....
In a 5 gallon batch the typical 5 oz. of corn sugar raises the OG, per Brewer's Friend, by 0.003. So, even if the yeast are warm and produce an off flavor, they can't produce very much of it with only 0.003 of SG to munch on.
Yeast too warm munching through 1.050 wort, for example, would in my mind be a completely different story, as there'd be a lot more opportunity for them to produce an off flavor.
Guess this is a terribly long-winded way for me to say... room temp probably good, as the community so often suggests, but if you're warmer or colder than that when carbonating, don't sweat it. It's a long way from being too warm or too cold during a primary fermentation.