Extend remove_ssh_key audit event to Enterprise users

What does this MR do and why?

Extends remove_ssh_key audit event to Enterprise users.

References

#361778 (closed)

Screenshots or screen recordings

Before	After

  {
    "id": 38,
    "author_id": 76,
    "entity_id": 100,
    "entity_type": "Group",
    "event_name": "remove_ssh_key",
    "details": {
      "event_name": "remove_ssh_key",
      "author_name": "Test User",
      "author_class": "User",
      "target_id": 18,
      "target_type": "Key",
      "target_details": "SSH Key",
      "custom_message": "Removed SSH key",
      "ip_address": "127.0.0.1",
      "entity_path": "top-level",
      "author_email": "test@test.com"
    },
    "created_at": "2025-06-24T16:51:32.872Z"
  }

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