v1.9.20-RC2

Kotlin v1.9.20-RC2 addresses critical compiler stability issues, particularly a Kotlin/Native crash with ::class expressions and JavaScript compilation. This release resolves Gradle configuration cache conflicts and reflection edge cases with value classes, while streamlining expect/actual declaration handling and improving build performance.

Highlights

• Fixed Kotlin/Native compiler crash when using ::class in JavaScript targets
• Resolved Gradle configuration cache incompatibility preventing 'platform' reference resolution
• Improved reflection callSuspend to correctly handle value class primitive type mismatches
• Fixed incorrect warning messages during vararg to Array overriding in expect/actual declarations
• Eliminated spurious warnings when adding members and supertypes to open expect declarations
• Improved Gradle configuration time performance by optimizing property loading