JVM_IR KT-46160 don't use LambdaMetafactory for mutifile class members

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/indy/LambdaMetafactoryArguments.kt

@@ -78,6 +78,14 @@ internal class LambdaMetafactoryArgumentsBuilder(
             return null
         }
 
+        val implFunParent = implFun.parent
+        if (implFunParent is IrClass && implFunParent.origin == IrDeclarationOrigin.JVM_MULTIFILE_CLASS) {
+            // LambdaMetafactory treats multifile class part members as non-accessible,
+            // even if the member is referenced via facade,
+            // because corresponding part class is non-accessible
+            return null
+        }
+
         // Can't use JDK LambdaMetafactory for annotated lambdas.
         // JDK LambdaMetafactory doesn't copy annotations from implementation method to an instance method in a
         // corresponding synthetic class, which doesn't look like a binary compatible change.