Backported chnages

• Reliably decide whether to generate static forwarders #26510
• REPL: attempt to detect user overridden toString for Product #26451
• Add missing directives-parser artifacts to the released artifacts #26516

Contributors

Thank you to all the contributors who made this release possible 🎉

According to git shortlog -sn --no-merges 3.9.0-RC2..3.9.0-RC3 these are:

     4  Jamie Thompson
     4  Wojciech Mazur
     2  Solal Pirelli
     1  Arnout Engelen