The test `Tests_Comment_CheckComment::test_should_return_true_when_content_does_not_match_moderation_keys()`
did not, in fact, test for a `true` value, but for a false one.
Switching to `assertTrue()` caused a failure, because the test comment
triggered the 'comment_moderation' test. As in other tests in the file,
the solution is to force 'comment_moderation' to 0 for the purposes of
the test.
Introduced in [32519].
Props stephdau.
Fixes#40584.
git-svn-id: https://develop.svn.wordpress.org/trunk@40557 602fd350-edb4-49c9-b593-d223f7449a82