Do not use relation field from default order when fetching One2Many records

The records are already ordered by the field id to be grouped later so such
order clause has no impact on the result.
But they require joins that may not be needed otherwise.

Closes #14716

trytond/trytond/model/fields/one2many.py

@@ -154,7 +154,9 @@ class One2Many(Field):
         if self.order:
             order += self.order
         elif Target._order:
-            order += Target._order
+            order += [
+                (oexpr, otype) for oexpr, otype in Target._order
+                if not oexpr.startswith(f'{self.field}.')]
         if reference_key:
             references = ['%s,%s' % (model.__name__, x) for x in ids]
             clause = [(self.field, 'in', references)]