[FIX] hr_holidays: is absent search

To Reproduce
============
- go to employees app and filter by `Absent is Yes` then by `Absent is No`
some employees are present in both filters which is not logical

Problem
=======
the search method on `is_absent` field always performs the search `ids in absent_ids` no matter what are the operator and the value

Solution
========
use the `operator` argument in the searching

opw-3205967

closes odoo/odoo#115443

X-original-commit: 89a762ec463efd936c5d60a483f3cac876724b7e
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>
Signed-off-by: abla001 <abla@odoo.com>

addons/hr_holidays/models/hr_employee.py

@@ -180,7 +180,10 @@ class HrEmployeeBase(models.AbstractModel):
             ('date_from', '<=', today_end),
             ('date_to', '>=', today_start),
         ])
-        return [('id', 'in', holidays.mapped('employee_id').ids)]
+        op = 'not in'
+        if (operator == '=' and value) or (operator == '!=' and not value):
+            op = 'in'
+        return [('id', op, holidays.mapped('employee_id').ids)]
 
     @api.model_create_multi
     def create(self, vals_list):

addons/hr_holidays/tests/test_out_of_office.py

@@ -103,3 +103,18 @@ class TestOutOfOfficePerformance(TestHrHolidaysCommon, TransactionCaseWithUserDe
         self.leave.write({'state': 'validate'})
         with self.assertQueryCount(__system__=2, demo=2):
             self.assertEqual(self.hr_partner.im_status, 'leave_offline')
+
+    def test_search_absent_employee(self):
+        present_employees = self.env['hr.employee'].search([('is_absent', '!=', 'True')])
+        absent_employees = self.env['hr.employee'].search([('is_absent', '=', 'True')])
+        today_date = datetime.utcnow().date()
+        holidays = self.env['hr.leave'].sudo().search([
+            ('employee_id', '!=', False),
+            ('state', 'not in', ['cancel', 'refuse']),
+            ('date_from', '<=', today_date),
+            ('date_to', '>=', today_date),
+        ])
+        for employee in present_employees:
+            self.assertFalse(employee in holidays.employee_id)
+        for employee in absent_employees:
+            self.assertFalse(employee not in holidays.employee_id)