Optimize protected branches/tags matching

What does this MR do and why?

Contributes to #345479

Problem

We request branches and tags object from Gitaly, however we need only their names to match against provided reference.

Solution

Use branch_names and tag_names calls that support caching and are much faster.

Screenshots or screen recordings

http://127.0.0.1:3000/flightjs/Flight/-/settings/repository#js-protected-tags-settings

Before	After

See gitaly execution times ☝

Approximately I expect 20-40% decrease of response time. Grafana: https://dashboards.gitlab.net/goto/k8XL9c17k?orgId=1.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.