[Test] Merge box against java testdata into codegen black box testsdata

compiler/testData/codegen/sam/kt11696.kt

@@ -0,0 +1,40 @@
+// DONT_TARGET_EXACT_BACKEND: JS JS_IR JS_IR_ES6 WASM NATIVE
+// IGNORE_BACKEND_FIR: JVM_IR
+// WITH_RUNTIME
+// MODULE: lib
+// FILE: Promise.java
+import org.jetbrains.annotations.NotNull;
+
+interface Consumer<T> {
+    void consume(T t);
+}
+
+public abstract class Promise<T> {
+    @NotNull
+    public abstract Promise<T> done(@NotNull Consumer<? super T> done);
+}
+
+// MODULE: main(lib)
+// FILE: 1.kt
+class User {
+    fun use(promise: Promise<*>): Promise<*> {
+        promise.done { }
+        return promise
+    }
+}
+
+fun box(): String {
+    var result = ""
+    User().use(
+            object : Promise<CharSequence>() {
+                override fun done(x: Consumer<in CharSequence?>): Promise<CharSequence> {
+                    result = x.javaClass.genericInterfaces[0].toString()
+                    return this
+                }
+            }
+    )
+
+    if (result != "Consumer<java.lang.Object>") return "fail: $result"
+
+    return "OK"
+}