Move permission check of manual actions of deployments

What does this MR do?

On the environments list page the permission check for manual actions happens on the frontend. This should happen on the backend and just return an empty list of manual actions if a user has no permission.

What are the relevant issue numbers?

Close https://gitlab.com/gitlab-org/gitlab-ce/issues/52412

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• [-] Documentation created/updated via this MR
• [-] Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• [-] Tested in all supported browsers
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the database guides
• [-] Link to e2e tests MR added if this MR has Requires e2e tests label. See the Test Planning Process.
• Security reports checked/validated by reviewer