Improve the loading of packages tags

❄ What does this MR do and why?

GitLab npm Registry provides an information about tags linked to a package.
It turned out that sometimes this query can perform quite slow: link (internal)

We already added the index that will speed up the query: !110631 (merged)

Additionally this MR changes the query to fetch Packages::Tag from the database.
It will bring another significant improvement.
The detailed database analysis is here

Another measurement we'll take is to remove last_of_each_version from here But first it is required to eliminate duplicate npm packages: &9812 (closed)

📸 Screenshots or screen recordings

🔬 How to set up and validate locally

1. Prepare npm package with tags. For that in rails console run the following:

   def fixture_file_upload(*args, **kwargs)
     Rack::Test::UploadedFile.new(*args, **kwargs)
   end
   
   package = FactoryBot.create(:npm_package, project: Project.first)
   10.times { FactoryBot.create(:packages_tag, package: package) }
   package.name # note down package's name, it will be used in the url later.

2. Create request to list package's tags docs

   $ curl --header "Authorization: Bearer <PAT>" "http://gdk.test:3000/api/v4/projects/:project_id/packages/npm/-/package/:package_name/dist-tags"

3. Validate the response. It should contain the tags of package.

✅ 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.

Related to #388241 (closed)