Be in RTL mode, on a list view
Click on the button to set up optional fields
Before this commit, the dropdown expanded to the right, and was partly invisible
After this commit, we dynamically set to which direction the dropdown should expand
depending on RTL/LTR
Consequently the dropdown is fully visible in either mode, and expands to the list
rather than away from it
closes#39402closesodoo/odoo#39628
X-original-commit: fb914d176de5a4711f11de32945ebaec0164f62e
Signed-off-by: Lucas Perais (lpe) <lpe@odoo.com>