Provide limit to Gitaly for "Get references a commit is pushed to" API

What does this MR do and why?

Contributes to https://gitlab.com/gitlab-org/gitlab/-/issues/366829

Problem

The call to Gitaly is suboptimal because it doesn't set a limit of requested references.

Solution

Provide a limit to Gitaly RPC to fetch only requested references.

The limit is dynamically calculated to ensure that we request only necessary minimum of references.

References

https://gitlab.com/gitlab-org/gitlab/-/issues/366829

How to set up and validate locally

1. Visit http://gdk.test:3000/api/v4/projects/gitlab-org%2Fgitlab-test/repository/commits/HEAD/refs?per_page=5&page=2
2. Modify per_page and page values to ensure that pagination still works

MR acceptance checklist

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Related to #366829