Prior to this commit, there were functional issues for the floating toolbar
and design issues for the Powerbox in the web editor.
This commit fixes those issues, like alignement for the icons in the list
of the commandbar, box shadows, and the responsiveness of the floating
toolbar on mobile.
In commit [1], the toolbar dropdown had the display static added, but it
causes problems to the responsiveness.
This commit put the display back to dynamic on the dropdown and so, fixes
the dropdown not showing on mobile because of the overflow-x on auto.
The dynamic state also allows the dropdown to change direction (dropdown
to dropup) when there's not enough space for the content of the dropdown.
Would be nice to have : use display state on the all the editor
toolbars (frontend and backend) to modify the layout of the toolbar for
mobile, for a better behavior and design (ex: the different lists in a
dropdown).
For now, it's just a horizontal scroll.
[1]: 459d4e27a8
task-3087826
Part-of: odoo/odoo#110161