Adds a caret to the font selection in the NameAndSignature component. Prior to this change, the font icon was hidden without the caret. Also, the caret direction is not being correctly updated when the target element is closed. This commit fixes this by storing the initial direction and forcing this direction when the dropdown is closed. task-3431069 closes odoo/odoo#135774 X-original-commit: 7d11e281fa70a853191378bee3750d12bb76f9b9 Related: odoo/enterprise#47513 Signed-off-by: Bruno Boi (boi) <boi@odoo.com>