Before this commit the target of options and nested options tour steps
could be hidden under an opened palette.
After this commit the tips of options and nested options tour steps
require that no palette is opened.
An 'allowPalette' parameter can be used to remove this condition, for
example if 'changeOption' is used to select an option within the
palette during a test tour.
A step is added to close the color palette - which, while opened,
prevents the next `changeOption` step from being activated.
task-2728994 (was task-2675252)
closesodoo/odoo#84093
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>