tests: replace bogus queue in test-qeu

Per yosoyubik's commentary in urbit/urbit#1799:

The test is expecting that qeu to not be correct.. when it is.

The test [98 [97 ~ ~] [100 ~ [99 ~ ~]]] is a correct queue if we look at
vertical ordering: (mor 98 97), (mor 98 100) & (mor 100 99) all return
%.y, so vertical ordering is correct.

The previous implementation of +apt:to checked only horizontal ordering
between siblings, in this case that would fail: (mor 97 100) returns
%.n, but that is not how you check correctness of hoon treaps.

The solution is to modify that test with a proper "incorrect" +qeu, for
example: ((soft (qeu)) [97 [98 ~ ~] [100 ~ [99 ~ ~]]]). Vertical
ordering is not correct with any of the children.

pkg/arvo/tests/sys/hoon/molds.hoon

@@ -30,6 +30,6 @@
   ::
     %+  expect-eq
       !>  ~
-      !>  ((soft (qeu)) [98 [97 ~ ~] [100 ~ [99 ~ ~]]])
+      !>  ((soft (qeu)) [97 [98 ~ ~] [100 ~ [99 ~ ~]]])
   ==
 --