Suppress build warnings from MPP modules

source-local/build.gradle.kts

@@ -41,6 +41,7 @@ android {
 tasks {
     withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> {
         kotlinOptions.freeCompilerArgs += listOf(
+            "-Xexpect-actual-classes",
             "-opt-in=kotlinx.serialization.ExperimentalSerializationApi",
         )
     }