[FIX] link_tracker: prevent undeterministic order on new/recent filter

Before this commit, ordering by `create_date DESC` and `write_date DESC` could
lead to undeterministic order if multiple records had the exact same date.
This is the case during tests as `crate_date` is set to transaction start time.
(That's what NOW() in PSQL does)

Now, we enforce that order to avoid randomness.

Related to #31829

Signed-off-by: Jérémy Kersten (jke) <jke@openerp.com>

addons/link_tracker/models/link_tracker.py

@@ -185,11 +185,11 @@ class LinkTracker(models.Model):
     @api.model
     def recent_links(self, filter, limit):
         if filter == 'newest':
-            return self.search_read([], order='create_date DESC', limit=limit)
+            return self.search_read([], order='create_date DESC, id DESC', limit=limit)
         elif filter == 'most-clicked':
             return self.search_read([('count', '!=', 0)], order='count DESC', limit=limit)
         elif filter == 'recently-used':
-            return self.search_read([('count', '!=', 0)], order='write_date DESC', limit=limit)
+            return self.search_read([('count', '!=', 0)], order='write_date DESC, id DESC', limit=limit)
         else:
             return {'Error': "This filter doesn't exist."}