[FIX] project_timesheet_holidays: multi company fixes

In a multi company environment, some adjustment must be done:
- the company of an internal project of a company should be in that company
- the generate timesheet on holidays validation must be in the company the
task (or internal project)

The company should be correctly propagate to timesheets.

Task-1999686

addons/project_timesheet_holidays/models/hr_holidays.py

@@ -83,6 +83,7 @@ class Holidays(models.Model):
                     'date': fields.Date.to_string(day_date),
                     'holiday_id': holiday.id,
                     'employee_id': holiday.employee_id.id,
+                    'company_id': holiday_task.company_id.id or holiday_project.company_id.id,
                 })
 
         return super(Holidays, self)._validate_leave_request()

addons/project_timesheet_holidays/models/res_company.py

@@ -2,6 +2,7 @@
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
 from odoo import api, fields, models, _
+from odoo.exceptions import ValidationError
 
 
 class Company(models.Model):
@@ -14,6 +15,13 @@ class Company(models.Model):
         'project.task', string="Time Off Task",
         domain="[('project_id', '=', leave_timesheet_project_id)]")
 
+    @api.constrains('leave_timesheet_project_id')
+    def _check_leave_timesheet_project_id_company(self):
+        for company in self:
+            if company.leave_timesheet_project_id:
+                if company.leave_timesheet_project_id.company_id != company:
+                    raise ValidationError(_('The Internal Project of a company should be in that company.'))
+
     def init(self):
         self.search([('leave_timesheet_project_id', '=', False)])._create_leave_project_task()
 
@@ -40,7 +48,7 @@ class Company(models.Model):
                     'name': _('Time Off'),
                     'project_id': company.leave_timesheet_project_id.id,
                     'active': False,
-                    'company_id': False,
+                    'company_id': company.id,
                 })
                 company.write({
                     'leave_timesheet_task_id': task.id,

addons/project_timesheet_holidays/models/res_config_settings.py

@@ -7,5 +7,5 @@ from odoo import fields, models
 class ResConfigSettings(models.TransientModel):
     _inherit = 'res.config.settings'
 
-    leave_timesheet_project_id = fields.Many2one(related='company_id.leave_timesheet_project_id', string="Internal Project", readonly=False)
-    leave_timesheet_task_id = fields.Many2one(related='company_id.leave_timesheet_task_id', string="Time Off Task", readonly=False)
+    leave_timesheet_project_id = fields.Many2one(related='company_id.leave_timesheet_project_id', string="Internal Project", domain="[('company_id', '=', company_id)]", readonly=False)
+    leave_timesheet_task_id = fields.Many2one(related='company_id.leave_timesheet_task_id', string="Time Off Task", domain="[('company_id', '=', company_id)]", readonly=False)