[IMP] stock: avoid calling quant_tasks by default.

Currently, a cron is called once a day (by default)
to merge duplicated quants. Moreover, each
time the customer loads the Inventory Report,
the duplicated quants are also merged.

This is a bit overkill as duplicated quants
due to concurrent updates are quite rare. Also,
merging quants can be quite slow when the stock.quant
table is big (>1M).

This commit adds an ir.config_parameter to turn
off the merging of quants when accessing the
Inventory Report. It can be switched back on
for a specific DB if duplicated quants happen
more frequently.

opw-2574152

closes odoo/odoo#87119

X-original-commit: bb2cb76a724c1bc12aa7e515b1376b88ffd97b3d
Signed-off-by: Arnold Moyaux <arm@odoo.com>

addons/stock/models/stock_quant.py

@@ -917,7 +917,8 @@ class StockQuant(models.Model):
         :param domain: List for the domain, empty by default.
         :param extend: If True, enables form, graph and pivot views. False by default.
         """
-        self._quant_tasks()
+        if not self.env['ir.config_parameter'].sudo().get_param('stock.skip_quant_tasks'):
+            self._quant_tasks()
         ctx = dict(self.env.context or {})
         ctx['inventory_report_mode'] = True
         ctx.pop('group_by', None)