Display project id on project admin page

What does this MR do?

Resolves #60949 (closed) by displaying the Project ID on the projects admin page.

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation created/updated or follow-up review issue created
  • Author's comment: As I see, the currently existing doc only describes the Projects Overview page: Admin Area > Overview > Projects. There isn't any documentation about how the individual Project page looks like in the admin area, and I didn't find necessary to create one (that page seems quite straightforward imho).
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Performance and testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers

Closes #60949 (closed)