[FIX] web: fix the scroll issue of kanban view with search panel
[FIX] web: fix the scroll issue of kanban view with search panel

Currently in kanban view which contains search panel when user click
on kanban dropdown menu then a dropdown menu will be hidden due to
scrollbar of kanban view.

This issue arises from this commit:
https://github.com/odoo/odoo/commit/a95cbbd631a2fa9be62eb42cba43e853fdf4b789

closes odoo/odoo#49791

Task-id: 2204306
Closes: #47586
X-original-commit: d613bb8ba4f5a4d818592a80f4aee2ef67916bc0
Signed-off-by: Yannick Tivisse (yti) <200a91eb0e5cc4726d6a3430713b580138f34298@odoo.com>

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo