[FIX] Commit transient model vacuuming directly

Before this commit:
If the "Base: Auto-vacuum internal data" is archived since a long time, auto-vacuuming models may timeout. As the commit was previously done at the end of the cron, the process wouldn't have been applied. As a consequence the Scheduled action will timeout every time

After this commit:
The commit is done right after each model vacuuming

OPW-2638706

closes odoo/odoo#77730

Signed-off-by: Raphael Collet (rco) <rco@openerp.com>

odoo/addons/base/models/ir_autovacuum.py

@@ -22,6 +22,7 @@ class AutoVacuum(models.AbstractModel):
                 try:
                     with self._cr.savepoint():
                         model._transient_vacuum(force=True)
+                    self._cr.commit()
                 except Exception as e:
                     _logger.warning("Failed to clean transient model %s\n%s", model, str(e))