Fixed AWS Config S3 ACL issues

- AWS Config appears to have changed how ACLs are returned
- This PR makes moto's behavior consistent with AWS Config's S3 representation

Fixes #3986

moto/s3/models.py

@@ -436,10 +436,6 @@ class FakeAcl(BaseModel):
             )
             for permission in permissions:
                 for grantee in grant.grantees:
-                    # Config does not add the owner if its permissions are FULL_CONTROL:
-                    if permission == "FULL_CONTROL" and grantee.id == OWNER:
-                        continue
-
                     if grantee.uri:
                         grant_list.append(
                             {