Fix and ban deprecation warning "Passing an ActiveRecord object"

What does this MR do and why?

This commit fixes the following deprecation warning

DEPRECATION WARNING: Passing an Active Record object to `quote` directly
is deprecated

emitted by https://github.com/rails/rails/blob/v6.1.6.1/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb#L13-L16

It also bans this deprecation warning to avoid future instances.

Moreover, it also bans the deprecation warning proactively:

Passing an Active Record object to `type_cast` directly is deprecated

emitted by https://github.com/rails/rails/blob/v6.1.6.1/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb#L28-L31

Please see #369970 (closed) for more information.

How to set up and validate locally

1. Revert the code change via git checkout master -- lib/gitlab/object_hierarchy.rb

2. Run bin/rspec --order defined spec/models/group_spec.rb -e ancestors

3. Observe failure

  1) Group traversal queries linear behaves like namespace traversal #ancestors_upto with use_traversal_ids_for_ancestors_upto enabled includes ancestors upto but excluding the given ancestor
     Failure/Error: connection.send(...)

     ActiveSupport::DeprecationException:
       DEPRECATION WARNING: Passing an Active Record object to `quote` directly is deprecated
       and will be no longer quoted as id value in Rails 7.0.
        (called from block in write_using_load_balancer at /home/peter/devel/gitlab/gdk/gitlab/lib/gitlab/database/load_balancing/connection_proxy.rb:120)
     Shared Example Group: "#ancestors_upto" called from ./spec/support/shared_examples/namespaces/traversal_examples.rb:248

MR acceptance checklist

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