correct file size for raw node

[coryschwartz]

While looking at ipfs/kubo#7916 I noticed the file size returned by https://github.com/ipfs/go-ipfs/blob/master/core/commands/get.go#L80 is 0 for this raw dag.

◉ ipfs get QmasYd9docsEaozsdZxCp29yfoZoUJDrvqgkT8Hry66N24
Saving file(s) to QmasYd9docsEaozsdZxCp29yfoZoUJDrvqgkT8Hry66N24
 111.50 KiB / 111.50 KiB [===========================================================================] 100.00% 0s

◉ curl localhost:8082/ipfs/QmasYd9docsEaozsdZxCp29yfoZoUJDrvqgkT8Hry66N24 -o /dev/null
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  111k  100  111k    0     0  13.6M      0 --:--:-- --:--:-- --:--:-- 13.6M

[welcome]

Thank you for submitting this PR!
A maintainer will be here shortly to review it.
We are super grateful, but we are also overloaded! Help us by making sure that:

• The context for this PR is clear, with relevant discussion, decisions
  and stakeholders linked/mentioned.

• Your contribution itself is clear (code comments, self-review for the
  rest) and in its best form. Follow the code contribution
  guidelines
  if they apply.

Getting other community members to do a review would be great help too on complex PRs (you can ask in the chats/forums). If you are unsure about something, just leave us a comment.
Next steps:

• A maintainer will triage and assign priority to this PR, commenting on
  any missing things and potentially assigning a reviewer for high
  priority items.

• The PR gets reviews, discussed and approvals as needed.

• The PR is merged by maintainers when it has been approved and comments addressed.

We currently aim to provide initial feedback/triaging within two business days. Please keep an eye on any labelling actions, as these will indicate priorities and status of your contribution.
We are very grateful for your contribution!

[coryschwartz]

On Raw types, data 0 bytes in the data section, but the filesize is set.

i.e.

Type:Raw Data:"" filesize:114178 blocksizes:114178

[Stebalien]

Thanks!