[E2E] Fix workspaces spec by updating the versions and testid changes

What does this MR do and why?

Adding the following changes to the workspaces spec

• Added testid for the empty workspace button
• Latest changes agent-config
• Version updates

Once this is Merged, the failures in #439380 (closed) should be fixed

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

How to set up and validate locally

The full list of variable and their values to run this spec can be found in 1password "Run workspaces tests against staging"

bundle exec bin/qa Test::Instance::All https://staging.gitlab.com -- -- qa/specs/features/ee/browser_ui/3_create/remote_development/workspace_actions_spec.rb