2025-08-01

Make KIC default

Summary:
### Context
We are integrating the Kotlin Incremental Compiler (KSIC) into Buck to enable incremental compilation of Kotlin source files. This aims to enhance build speed by recompiling only modified source files within a target, rather than rebuilding the entire target.

### This diff
After testing on IG and WA, KIC will be the default option for all Kotlin targets.

*Note: This change will be announced by a public post before landing.*

Reviewed By: IanChilds

Differential Revision: D79264690

fbshipit-source-id: 44d4b0fd7db301ff80f96f08109873e6e1acf433