Update LKG and package.json version (microsoft#30816)

Update versions and LKG for 3.4.2 (microsoft#30741)

* Update versions to 3.4.2

* LKG update for 3.4.2

LKG update for 3.4.1

Merge pull request microsoft#28609 from ajafff/class-decorator-generics

resolve TypeReference in class decorator at parent of class

Update LKG.

Update LKG.

Update LKG.

Update LKG.

Enable debug info by default when debugging the language server

Update LKG.