[18.0] stock_rule_reserve_max_quantity failing on quantity exceed

[jbaudoux]

The test test_pick_ship_qty_done_exceeded is failing.
https://github.com/OCA/stock-logistics-reservation/actions/runs/17266145601/job/48998605438?pr=21#step:8:296

As it makes other PRs on this repo fail, I'm disabling this test for now.

cc @Shide @moduon @rafaelbn @chienandalu

relates to this comment #9 (comment)