[3.2.x] Fixed #32645 -- Fixed QuerySet.update() crash when ordered by joined fields on MySQL/MariaDB.

Thanks Matt Westcott for the report.

Regression in 779e615e36.
Backport of ca98729055 from main

tests/update/models.py

@@ -45,3 +45,7 @@ class Bar(models.Model):
 
 class UniqueNumber(models.Model):
     number = models.IntegerField(unique=True)
+
+
+class UniqueNumberChild(UniqueNumber):
+    pass