[FIX] stock: avoid flush all env in quants update

Issue:
The `_update_available_quantity` will flush the all environment due to
the savepoint (at each call). When we working with the package,
it becomes bottleneck due to the `_compute_package_info`. Indeed,
it computes two compute store field (`location_id` and `company_id`) and
depends of multiple field of related quants `quants_ids.xxx`. It means
that each time we enter/exit in the savepoint to update quants, this
compute will be execute (because of flush + compute_store).

Solution:
Avoid flushing when enter in the savepoint of
`_update_available_quantity` (`flush=False`)

Performance gain:
To validate a Delivery with 1000 move lines with package (source and
dest):
- Without patch: +- 120 sec
- With patch: +- 17 sec

opw-2371161

closes odoo/odoo#62178

Signed-off-by: Arnold Moyaux <amoyaux@users.noreply.github.com>

0 files changed, 0 insertions, 0 deletions