Modify file restore to rectify tar issue

What does this MR do?

This submits a proposed code change to rectify the issue occurring when performing a restore on distros that are using older tar versions (CentOS 6, RHEL 6, etc.). This would instead use Open3.pipeline_start, which would allow for catching the STDERR and applying conditional logic to determine if it should raise a Backup::Error.

What are the relevant issue numbers?

#46891 (moved)

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• Tests added for this feature/bug
• Tested in all supported browsers
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the database guides
• Link to e2e tests MR added if this MR has Requires e2e tests label. See the Test Planning Process.
• Security reports checked/validated by reviewer