Before this commit, when PDF viewer opens, it opens the sidebar forcefully. Now with this commit, we have restricted to open the sidebar on initial load by passing the false value to the forceOpen flag, we did this changes directly in the library file itself as the file loads in iframe so we can not change the file from outside by overriding the existing function or parameter. task-2209742 closes odoo/odoo#47458 Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>