Dados dos arrays, que representan dos sándwiches, devuelve si ambos sándwiches usan el mismo tipo de pan. El pan siempre se encontrará al principio y al final del array.
has_same_bread(
["white bread", "lettuce", "white bread"],
["white bread", "tomato", "white bread"]
) ➞ true
has_same_bread(
["brown bread", "chicken", "brown bread"],
["white bread", "chicken", "white bread"]
) ➞ false
has_same_bread(
["toast", "cheese", "toast"],
["brown bread", "cheese", "toast"]
) ➞ false