Current behaviour
- when we access the daterange picker it was observed that the apply button
appeared flatter and was not vertically centered.
Expected behaviour
- add h-100 on buttons container to ensure they are vertically centered and no
longer appear flatter
- add close button in which action is similar to pressing ESC or clicking
outside the popover
Task-3624556
closesodoo/odoo#148812
Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>