Issue title: stock_move_change_source_location can't change source to different warehouse
 Issue body: We are trying to use stock_move_change_source_location module to change the location
of a delivery order to a different warehouse. But the drop down for location only shows the existing warehouse
for that order.

We have hundreds of orders that are waiting for inventory in warehouse A and we want to change all
those orders to fulfill from warehouse B which has stock.
 Comments: 
 Comment 0: There hasn't been any activity on this issue in the past 6 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 issue to never become stale, please ask a PSC member to apply the "no stale" label.
{'source': 'GithubIssues', 'repo_name_with_owner': 'OCA/stock-logistics-workflow', 'issue_id': 1126123271, 'repo_stars': 159.0}