Backported fixes

• Refine implicit priority change warnings #21045
• Use pathing jars in cli commands #21121
• expand classpath of pathing jars in scala_legacy command #21160
• Fix symbol reference retrivial of scala.caps.Caps #20493

Contributors

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

According to git shortlog -sn --no-merges 3.5.0-RC3..3.5.0-RC4 these are:

     5  Martin Odersky
     3  Wojciech Mazur
     2  Hamza REMMAL
     1  Jamie Thompson