I’d do the same I would with any dog, of any breed. Keep a close eye on the situation and ask the owners to put the dog away if the children in the house are bothering it or the dog seems stressed out.
Most of my best dog friends are pitbulls, living right outside Philadelphia as I do and hanging out with a lot of people who do dog rescue. I know a grand total of one pit with people-aggression issues and he has never once bitten or tried to bite a human being (his owner is excellent though are preventing any scenario where he might be induced to bite). Any well-socialized pitbull is as sweet as most Labradors with humans (but not as dumb, clumsy, drooly or ball-obsessed). It’s other dogs that tend to be a problem with pitbulls.
As others have said the ‘locking jaws’ are a silly myth. Pits are strong, muscular, but medium size (30-60 lbs) dogs with strong jaws and necks and good-size teeth, but they are not supernatural monsters and do not commit murder with every bite. One of my best friends does dog rescue and also owns 3 pits and 2 rott mixes (so there are often upwards of 8 dogs in her house). She’s dealt with many a dog fight in her household and hasn’t had many serious problems or injuries. Her dogs sometimes get snappy with each other and the injuries that result are mostly cuts to the head, neck and ears - very few puncture wounds, even small ones. IME most wounds in dog fights are slices from incidental contact of snarling teeth being flailed around while both dogs scream and yell in each other’s faces and try to scare the other into backing down.
I confess I have a small bias against toy and miniature poodles. I’ve known way too many that were severe biters (two of my friends have scars on their faces from childhood mini poodle bites). So if there were a little poodle instead of a pitbull, I’d be much more on my toes!