[Test] Properly merge box against java testdata into codegen/box

Previous commit about it was 3199ce03 and it was completely wrong

compiler/testData/codegen/box/inline/kt19910.kt

@@ -0,0 +1,41 @@
+// DONT_TARGET_EXACT_BACKEND: JS JS_IR JS_IR_ES6 WASM NATIVE
+// FULL_JDK
+// WITH_RUNTIME
+// TARGET_BACKEND: JVM
+
+// MODULE: lib
+// FILE: J.java
+public class J {
+    public interface Consumer {
+        void accept(String p);
+    }
+
+    public static void invokeWithNull(Consumer x) {
+        x.accept(null);
+    }
+}
+
+// MODULE: main(lib)
+// FILE: Kotlin.kt
+inline fun makeRunnable(crossinline lambda: () -> Unit) =
+        object : Runnable {
+            override fun run() {
+                lambda()
+            }
+        }
+
+fun box(): String {
+    try {
+        makeRunnable {
+            J.invokeWithNull(object : J.Consumer {
+                override fun accept(t: String) {
+                    println(t)
+                }
+            })
+        }.run()
+    } catch (e: NullPointerException) {
+        return "OK"
+    }
+
+    return "fail: exception expected"
+}