Before this commit, clicking on any part of a kanban record would
initiate a drag & drop sequence, this included its dropdown. This caused
2 issues:
- You could start to drag & drop records by dragging their still opened
dropdowns ;
- Said dropdowns would remain open when dragging their parent record.
This commit fixes both of these issues by hiding dropdowns during drag
sequences and preventing drag when clicking inside the dropdowns.
closesodoo/odoo#98791
Signed-off-by: Simon Genin (ges@odoo) <ges@odoo.com>