phone number image field fix

inventory/models.py

@@ -1711,8 +1711,11 @@ class Customer(models.Model):
     national_id = models.CharField(
         max_length=10, unique=True, verbose_name=_("National ID"), null=True, blank=True
     )
-    phone_number = PhoneNumberField(
-        region="SA", unique=True, verbose_name=_("Phone Number")
+   
+    phone_number = models.CharField(
+        max_length=255,
+        verbose_name=_("Phone Number"),
+        validators=[SaudiPhoneNumberValidator()],
     )
     address = models.CharField(
         max_length=200, blank=True, null=True, verbose_name=_("Address")
@@ -1723,7 +1726,7 @@ class Customer(models.Model):
         blank=True,
         null=True,
         verbose_name=_("Image"),
-        default="default-image/user-jpg",
+        default="default-image/user.jpg",
     )
     thumbnail = ImageSpecField(
         source="image",