Move JVM8 box test to common

compiler/testData/codegen/box/javaInterop/notNullAssertions/functionAssertion.kt

@@ -0,0 +1,22 @@
+// TARGET_BACKEND: JVM
+// FILE: F.java
+import java.util.function.Function;
+
+public class F {
+    public static <T, U> U passNull(Function<? super T, ? extends U> f) {
+        return f.apply(null);
+    }
+}
+
+// FILE: test.kt
+// WITH_RUNTIME
+// FULL_JDK
+fun test(f: (Int?) -> String): String {
+    return F.passNull(f)
+}
+
+fun box(): String {
+    return test {
+        it?.toString() ?: "OK"
+    }
+}