logictest: fix up recent change

Just merged 55108a1 made one query
flaky: namely, we removed ORDER BY from `array_agg` so now the order of
two items can be arbitrary. This commit changes the test to assert that
the query succeeds (which this test is really about) without hitting an
error.

Release note: None

Author: yuzefovich

pkg/ccl/logictestccl/testdata/logic_test/refcursor

@@ -693,10 +693,8 @@ SELECT lag(y) OVER w, lead(y) OVER w, first_value(y) OVER w, last_value(y) OVER
 
 # Array functions are allowed (but ordering on REFCURSOR and REFCURSOR[] columns
 # is not).
-query TT
+statement ok
 SELECT array_agg(x), array_cat_agg(y) FROM t;
-----
-{foo,baz}  {bar}
 
 query TT rowsort
 SELECT array_append(y, x), array_prepend(x, y) FROM t;