jmap: fix message list order direction

Since the update to go-jmap 0.5.0, the IsAscending property is now taken
into account even if it is false.

The initial JMAP implementation wrongfully assumed the behaviour and
inverted the sort -r logic. Fix that so that messages are ordered as
expected.

Link: https://git.sr.ht/~rockorager/go-jmap/commit/1db959676c10398a8
Signed-off-by: Robin Jarry <[email protected]>
Tested-by: Tim Culverhouse <[email protected]>

worker/jmap/directories.go

@@ -349,7 +349,7 @@ func translateSort(criteria []*types.SortCriterion) []*email.SortComparator {
 		default:
 			continue
 		}
-		cmp.IsAscending = !s.Reverse
+		cmp.IsAscending = s.Reverse
 		sort = append(sort, &cmp)
 	}