[K/N] Update list of targets with stable caches

Enable compiler caches for iosSimulatorArm64 and macosArm64 targets
to make Apple Silicon distribution feature complete with
Intel-based one.

kotlin-native/konan/konan.properties

@@ -91,6 +91,7 @@ cacheableTargets.macos_arm64 = \
 
 # Targets that support compiler caches, but these caches
 # are not considered stable enough to be turned on by default.
+# TODO: Not used by Gradle plugin yet. Tracking issue: https://youtrack.jetbrains.com/issue/KT-47529
 optInCacheableTargets = \
   ios_arm64 \
   linux_x64

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/native/tasks/KotlinNativeTasks.kt

@@ -879,9 +879,12 @@ internal class CacheBuilder(val project: Project, val binary: NativeBinary, val
                 .map { KonanTarget.predefinedTargets.getValue(it) }
 
         // Targets with well-tested static caches that can be enabled by default.
-        // TODO: Move it to konan.properties.
+        // TODO: There is a corresponding property in konan.properties (optInCacheableTargets),
+        //  but naïve implementation makes build slower because it makes reading of konan.properties significantly more frequent.
+        //  One possible solution is to use [Gradle Build service](https://docs.gradle.org/current/userguide/build_services.html).
+        //  Tracking issue: https://youtrack.jetbrains.com/issue/KT-47529
         private val targetsWithStableStaticCaches =
-            setOf(KonanTarget.IOS_X64, KonanTarget.MACOS_X64)
+            setOf(KonanTarget.IOS_X64, KonanTarget.MACOS_X64, KonanTarget.IOS_SIMULATOR_ARM64, KonanTarget.MACOS_ARM64)
 
         internal fun cacheWorksFor(target: KonanTarget, project: Project) =
             target in getCacheableTargets(project)