Change issues sentence to use natural sorting

What does this MR do?

Changes the issues sentences in a MR to be in natural sorting order.

Are there points in the code the reviewer needs to double check?

This will natural (semantic version) sort numeric parts of namespaces and project names, too (e.g. bob3/project#3 comes before bob12/project#2). Should this be avoided?

Why was this MR needed?

Closes issue #20378 (closed) making issue numbers easier to find numerically in an MR.

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

• CHANGELOG entry added
• X Documentation created/updated
• X API support added
• Tests
  • Added for this feature/bug
  • All builds are passing
• 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 #20378 (closed)