fix(directions): show a 59.6-second leg as 1 min, not 60 s

routeDurationText checked the raw seconds against 60 but printed them rounded, so a leg of 59.5 s or more read "60 s". Compare the rounded seconds so it moves to minutes.

src/data/directions.test.mjs

@@ -849,6 +849,8 @@ test('route numbers follow the page language and never break from their unit', (
   assert.equal(routeDistanceText(1500), '1.5\u00a0km');
   assert.equal(routeDistanceText(2_345_000), '2345\u00a0km');
   assert.equal(routeDurationText(39), '39\u00a0s');
+  assert.equal(routeDurationText(59.4), '59\u00a0s');
+  assert.equal(routeDurationText(59.6), '1\u00a0min');
   assert.equal(routeDurationText(3900), '1\u00a0h\u00a05\u00a0min');
   assert.equal(routeDurationText(7200), '2\u00a0h');
   assert.equal(routeDistanceText(-1), '');