This commit adds a new prop to the Dropdown component: autoOpen.
It is true by default and follows the current behavior of all
current dropdowns (automatically open the dropdown when it is
hovered and a sibling is already opened) when set to true and
disable this feature for the dropdown when set to false.
The commit also applies this new property and set it to false on
all small icon dropdowns that are present by default in the
enterprise navbar to facilitate navigation with these (debug,
messaging and activity)
opw-3259473
closesodoo/odoo#117622
Signed-off-by: Bruno Boi (boi) <boi@odoo.com>