Fixed #19215 -- Fixed rendering ClearableFileInput when editing with invalid files.

Thanks Michael Cardillo for the initial patch.

tests/admin_widgets/models.py

@@ -1,8 +1,13 @@
+import tempfile
 import uuid
 
 from django.contrib.auth.models import User
+from django.core.files.storage import FileSystemStorage
 from django.db import models
 
+temp_storage_dir = tempfile.mkdtemp()
+temp_storage = FileSystemStorage(temp_storage_dir)
+
 
 class MyFileField(models.FileField):
     pass
@@ -177,6 +182,9 @@ class Advisor(models.Model):
 
 class Student(models.Model):
     name = models.CharField(max_length=255)
+    photo = models.ImageField(
+        storage=temp_storage, upload_to="photos", blank=True, null=True
+    )
 
     class Meta:
         ordering = ("name",)