[Bug] - PutObject overwrite file object

[jonaustin09]

Describe the bug When attempting to overwrite a file object with a nested object, the gateway returns an InternalError. Debug Log: stat my-bucket/foo/bar/baz: not a directory

To Reproduce

aws s3api create-bucket --bucket my-bucket
aws s3api put-object --bucket my-bucket --key foo/bar
aws s3api put-object --bucket my-bucket --key foo/bar/baz

Expected behavior The gateway should return ObjectParentIsFile error.