[14.0][FIX] shopfloor action validate_moves

[jbaudoux]

When a package with 2 moves in 2 different pickings has to be replenished, then the 2 pickings must be validated together otherwise you get the error "You cannot move the same package content more than once in the same transfer or split the same package into two location".

cc @mt-software-de

[OCA-git-bot]

Hi @simahawk, @sebalix, @guewen, some modules you are maintaining are being modified, check this out!

[mt-software-de]

~~LGTM except the missing test~~

[github-actions[bot]]

There hasn't been any activity on this pull request in the past 4 months, so it has been marked as stale and it will be closed automatically if no further activity occurs in the next 30 days. If you want this PR to never become stale, please ask a PSC member to apply the "no stale" label.