[1.7.x] Fixed #23416 -- Make sure DatabaseCreation respects checks.

Migrations respected Field.db_parameters()['check'], but
DatabaseCreation was still using just Field.db_type().

Backport of 14c8456 from master

tests/commands_sql/models.py

@@ -8,3 +8,4 @@ class Comment(models.Model):
 class Book(models.Model):
     title = models.CharField(max_length=100, db_index=True)
     comments = models.ManyToManyField(Comment)
+    counter = models.PositiveIntegerField()