Move batching from AR query to oids array

What does this MR do?

Fix performance issues linking known LFS objects to imported projects by batching against the array of oids rather than batching the results of the ActiveRecord query.

We've also reduced the number of overall queries for doing this.

To safeguard against downtime, we've added an overall limit against the maximum number of objects that can be imported.

#35749 (closed)

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• [-] Tested in all supported browsers

#35749 (closed)