[FIX] project_todo: remove filter on project when converting a to-do

Before this commit, the conversion of to-do to task is performed through
a form view on the project.task record. This view let the user pick a
project for the current record. A domain is applied on the project_id
field to only let the user select a project from the current selected
companies. This commit removes that filter to only rely on the ir.rule
of project.project instead.

task-3458909

closes odoo/odoo#137111

X-original-commit: 8adc4e2f08e6e704c314cda21494bb3486a32fd2
Signed-off-by: Xavier Bol (xbo) <xbo@odoo.com>

addons/project_todo/views/project_task_views.xml

@@ -159,8 +159,11 @@
                   js_class="todo_conversion_form">
                 <sheet>
                     <group>
+                        <!-- company_id field is used in the domain filtering project_id in
+                             hr_timesheet. Creating a bridge module just to add that field is
+                             overkill so it is added here. -->
+                        <field name="company_id" invisible="1"/>
                         <field name="project_id"
-                               domain="['|', ('company_id', 'in', context.get('allowed_company_ids')), ('company_id', '=', False)]"
                                required="1"
                                placeholder="Select an existing project"
                                default_focus="1"/>