[FIX] stock_ux: backport Odoo v19 for 'To Reorder' filter performance

[fw-bot-adhoc]

backport v19 performance fixes and improve search for 'To Reorder' filter

Backports Odoo v19 performance improvements:

• Store qty_to_order_computed field for faster queries
• Add index on warehouse_id
• Recompute orderpoints when moves are created in _run_pull

for more info:
odoo/odoo@6f2d1b2

Additional improvement beyond v19:

• Replace filtered_domain with SQL domain in _search_qty_to_order
  to avoid loading all orderpoints in memory

Includes migration scripts to create index and populate initial values.

Resolves database hangs and timeouts on large databases when filtering
orderpoints by 'To Reorder'.

Forward-Port-Of: #815

[roboadhoc]

[fw-bot-adhoc]

@ced-adhoc @maq-adhoc cherrypicking of pull request #815 failed.

stdout:

Auto-merging stock_ux/__manifest__.py
CONFLICT (content): Merge conflict in stock_ux/__manifest__.py
Auto-merging stock_ux/models/stock_warehouse_orderpoint.py

Either perform the forward-port manually (and push to this branch, proceeding as usual) or close this PR (maybe?).

In the former case, you may want to edit this PR message as well.

⚠️ after resolving this conflict, you will need to merge it via @roboadhoc.

More info at https://github.com/odoo/odoo/wiki/Mergebot#forward-port

[fw-bot-adhoc]

@ced-adhoc @maq-adhoc this forward port of #815 is awaiting action (not merged or closed).

[fw-bot-adhoc]

@ced-adhoc @maq-adhoc this forward port of #815 is awaiting action (not merged or closed).

[fw-bot-adhoc]

@ced-adhoc @maq-adhoc this forward port of #815 is awaiting action (not merged or closed).

[fw-bot-adhoc]

@ced-adhoc @maq-adhoc this forward port of #815 is awaiting action (not merged or closed).