fix(consume): fail fast on short reads in FileFetchJob

[AnatolyPopov]

Delete this text and replace it with a detailed description of your change. The
PR title and body will become the squashed commit message.

If you would like to tag individuals, add some commentary, upload images, or
include other supplemental information that should not be part of the eventual
commit message, please use a separate comment.

If applicable, please include a summary of the testing strategy (including
rationale) for the proposed change. Unit and/or integration tests are expected
for any behavior change and system tests should be considered for larger
changes.

[jeqo]

LGTM

[github-actions]

This PR is being marked as stale since it has not had any activity in 90 days. If you
would like to keep this PR alive, please leave a comment asking for a review. If the PR has
merge conflicts, update it with the latest from the base branch.

If you are having difficulty finding a reviewer, please reach out on the [mailing list](https://kafka.apache.org/contact).

If this PR is no longer valid or desired, please feel free to close it. If no activity occurs in the next 30 days, it will be automatically closed.