JVM_IR KT-46408 properly map fake overrides in method handles

compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/kt46408.kt

@@ -0,0 +1,43 @@
+// TARGET_BACKEND: JVM
+// JVM_TARGET: 1.8
+// SAM_CONVERSIONS: INDY
+
+// FILE: kt46408.kt
+
+open class User<IT : Identity> {
+    protected fun processIdentity(identity: IT) {
+        identity.ok = "OK"
+    }
+}
+
+class UserAc : User<AcIdentity>() {
+    fun doStuff(data: Container) {
+        data.processEachWith(this::processIdentity)
+    }
+}
+
+interface Identity {
+    var ok: String
+}
+
+class AcIdentity(override var ok: String) : Identity
+
+class Container {
+    var id = AcIdentity("xxx")
+
+    fun processEachWith(action: Action<AcIdentity>) {
+        action.execute(id)
+    }
+}
+
+fun box(): String {
+    val c = Container()
+    UserAc().doStuff(c)
+    return c.id.ok
+}
+
+// FILE: Action.java
+
+public interface Action<T> {
+    void execute(T var1);
+}