Re-enable the test for sorted outputs

[cbeck88]

We had to disable the test for sorted outputs, because:

• It was never previously exercised on a block version where the sorted output requirement is active
• It turns out the test tx only have one TxOut in it, so it is sorted for trivial reasons even when the reverse sorter is installed. This causes the test for sorting check effectiveness to pass even though the test expects it to fail.

I think we can fix this test if we go into the get_transaction function in mc_transaction_core_test_utils and make it add a second output, e.g. a change output, because then I think the test will work as intended

(Maybe worth capturing in a testing fast-follow-on ticket?

Originally posted by @sugargoat in #1827 (comment))

[cbeck88]

FYI the relevant test is being moved in this PR: #1875