fix: multiple list cases of the same length weren't being handled

examples/acceptance_tests/046/lib/tests.ak

@@ -1,9 +1,9 @@
 test sort_by_1() {
   let xs = [[4, 3, 2, 1], [2, 3, 4, 5]]
   when xs is {
-    [[], ys] -> True
-    [xs, []] -> True
+    [[], ys] -> False
+    [xs, []] -> False
     [[x, ..xs2], [y, ..ys2]] -> True
-    _ -> True
+    _ -> False
   }
 }