At the end of The Last Jedi, we see some kids playing with some crude action figures and other toys before being shooed back to work in the stables by an angry Bargwill Tomder. Most of the focus has been on the young boy, Temiri Blagg, using the Force to pull his broom to himself and is pretty well covered in the question "Did the stable boy use the Force?"
The other kids that are there just before Bargwill barges in are Oniho Zaya and Arashell Sar. While the movie doesn't necessarily dedicate much time to what the three of them were doing, the novelization really helps to clarify what's going on in that small room. Oniho has set up a fairly detailed battle reenactment with the "action figures" he's crafted from discarded bits around the stables and is telling Temiri and Arashell a story about the Jedi Master Luke Skywalker and how he faced down the entire First Order by himself.
The film's editing makes it seem (at least, in my opinion) that Oniho is telling his story almost simultaneously with the events as they are taking place on Crait, or, at least, way too soon after their occurrence for news to make it to Canto Bight and the Fathier stables.
Even if this scene is supposed to take place long enough after the actual battle on Crait, it seems to me that young Oniho's story is far too detailed and accurate to be mere coincidence. Not to mention the fact that the only people who would really know the story would be the surviving Resistance fighters and the attacking First Order forces, so it seems unlikely that the story would have made it to the Canto Bight stables without being altered to either take on a more "mythical" quality by those sympathetic to the Resistance, or to down-play the battle by First Order supporters.
All of this leads me to believe that Oniho is also Force-sensitive and has the ability to "see" events around the galaxy. Like Temiri, however, I'm not certain Oniho is fully aware of the implications of such a gift, but it seems that he is taking advantage of it to tell his tales to the others.
Is there any source currently available which would confirm or deny Oniho's connection to the Force?
The main reason I see this as an "important" question is that, since it's fairly well established that Temiri is Force-sensitive, establishing that Oniho is also Force-sensitive provides us with the impression that the ability to draw upon the Force is much more common than the legends would have the galaxy believe.
It seems from the conversation between Han Solo and Rey/Finn aboard the Millenium Falcon in The Force Awakens that characters still believe that the Jedi and the Force are just myth and fairy tale. To have it shown that the connection to the Force runs deep everywhere, it could lead to a very interesting storyline with the rebirth of the Jedi (and possibly/probably the Sith).
Another related question which may be useful in this discussion is this: "How did they learn the legend of Luke?" The answers in this question include references to the novel, The Legends of Luke Skywalker, discusses how Luke was already something of a legend before the battle (something I had not taken into account), as well as some other suggestions for how the story may have reached Oniho very quickly.
As stated in the original iteration of my question, though, the one thing that still stands out is the accuracy with which Oniho seems to be relating the story. While the discussion below has given a fair amount of evidence which points to the possibility (or probability) of the young boy not being Force-sensitive, there is still no definitive or absolute proof one way or the other.
It seems that no such evidence currently exists, and it may be that we never actually get anything "official" to answer this question conclusively, but the question still remains.