[FW][FIX] mrp, sale_mrp: _run_pull creates many pickings

[fw-bot]

The steps to reproduce:

• Go to a warehouse. Under the technical information tab, change the field sam_loc_id from "WH/Post-Production" to "WH/Stock".
• Create a sales order with 2 different products and confirm it.
• 2 pickings will be created with different group_id MO/XXXX instead of a single picking.

After this commit, we only check the sam_loc_id if we are in 3 steps manufacturing.

OPW-3871886

---

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Forward-Port-Of: #164056
Forward-Port-Of: #162947

[robodoo]

Pull request status dashboard.

[fw-bot]

@pno-odoo @clesgow cherrypicking of pull request #162947 failed.

stdout:

Auto-merging addons/mrp/models/stock_rule.py
Auto-merging addons/sale_mrp/tests/test_sale_mrp_procurement.py
CONFLICT (content): Merge conflict in addons/sale_mrp/tests/test_sale_mrp_procurement.py

stderr:

18:53:30.659656 git.c:463               trace: built-in: git cherry-pick 44791e617c4c0f663378897bff399560e754e0d8
error: could not apply 44791e617c4c... [FIX] mrp, sale_mrp: _run_pull creates many pickings
hint: After resolving the conflicts, mark them with
hint: "git add/rm <pathspec>", then run
hint: "git cherry-pick --continue".
hint: You can instead skip this commit with "git cherry-pick --skip".
hint: To abort and get back to the state before "git cherry-pick",
hint: run "git cherry-pick --abort".
----------
status:

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 @robodoo.

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

[pno-odoo]

robodoo r+