If we've already identified that we are within a `keySpan` of a node, we
exit the visitor logic early. It can be the case that we have two nodes
which technically match a given location when the end span of one node
touches the start of the keySpan for the candidate node. Because
our `isWithin` logic is inclusive on both ends, we can match both nodes.
This change exits the visitor logic once we've identified a node where
the position is within its `keySpan`.
PR Close#40047
1bf1b685d6