Backported PRs

• Bump Scala CLI to v1.14.0 (was v1.13.0) #26065
• Bump coursier to 2.1.25-M25 (was 2.1.25-M24) #26057
• Allow :help syntax for all settings #26052
• feature: Improve the logical sources provider #26079
• Add ErrorMessageID to -Winfer-union warnings (#25073) #25249
• Warn if for with many vals and overloaded map #25090
• Recognize Nullable annotations in explicit nulls #25237
• Fix false-positive pat mat unreachable case warning #25978
• Make type arguments to default methods InferredTypeTrees #25852
• Do not overwrite the supertype of non-trait super in Erasure #26081
• Move process parse exceptions to sys.error instead of a custom exception #25675
• Ensure mistakes in CI inputs are caught early #25677
• Fix TastyPrinter's JAR-walking logic to include subdirectories #25678
• Don't pop outermost region when skipping #25738
• Parse HTML properly in Scaladoc #25681
• Context bound always has a span #25809
• Fix infinite loop with bad section ends in TastyHeaderUnpickler #25676
• Don't lookahead from interpolation #25834

Contributors

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

According to git shortlog -sn --no-merges 3.8.4-RC2..3.8.4-RC3 these are:

     8	Solal Pirelli
     4	Wojciech Mazur
     3	Som Snytt
     2	Piotr Chabelski
     1	Martin Odersky
     1	Tomasz Godzik