This internal function retrieves the edges (connections) within a specific aisle from a set of arcs. The edges are filtered based on the `x_from` and `x_to` values, and ordered by `y_from`.
edges_from_aisle(arcs, aisle)
A data frame of edges that correspond to the specified aisle, ordered by the `y_from` values.
A data frame or matrix containing arc data, where each row represents an edge with `x_from`, `x_to`, `y_from`, and `y_to` values.
An integer representing the aisle number to filter the edges.