Display own user id in account settings pages

What does this MR do?

Display own user id in account settings pages

Why was this MR needed?

User ID was nowhere visible but needed for API.

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Tests
  • All builds are passing
  • Added for this feature/bug
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #33461 (closed)