feat(doctor): imported IRIMC doctors are active by default

Per request, doctors created via import now set active_doctor_appointment
= true (was false). DoctorImportTest updated to assert active.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/Doctor/Service/DoctorImportService.php

@@ -78,7 +78,7 @@ class DoctorImportService
                 $doctor = new Doctor($user, $name);
                 $doctor->setSource($source);
                 $doctor->setOwnerStatus('unclaimed');
-                $doctor->setActiveDoctorAppointment(false); // تا مالک واقعی برنامهٔ کاری بسازد
+                $doctor->setActiveDoctorAppointment(true); // پزشک ایمپورت‌شده فعال باشد
                 $created = true;
             }