m2m_change signal not work form admin site but work from shell

Question

I have a model

class Category(models.Model):
    name = models.CharField(unique=True, max_length=45, blank=False, null=False)
    perants= models.ManyToManyField('self',through="CategoryParent",symmetrical=False,blank=True)

and the CatigoryPerants is :

class CategoryParent(models.Model):
    chiled_filed=models.ForeignKey("Catigory", on_delete=models.CASCADE,related_name="parent_of_category",blank=False)
    parent_filed=models.ForeignKey("Catigory", on_delete=models.CASCADE,blank=False)

and I try to run a signal in signal.py:

@receiver(m2m_changed, sender=Catigory.perants.through )
def CatigoryParentSignals(sender, instance, action, pk_set, **kwargs):
    print("Some text or throw Validation Expiation or doin any thing")

The problem is when I add new parent to the Category from Shell with .parents.set([parents]) or.parants.add(parent) its work but when add any parent from admin site this signal isn't work

I add the signal.py in ready function apps.py

class myappConfig(AppConfig):
    default_auto_field = 'django.db.models.BigAutoField'
    name = 'myapp'
    def ready(self) -> None:
        import myapp.signals
        return super().ready()

and then add myappConfig to the __init__.py defult_app_config