Move JVM8 box test to common

compiler/testData/codegen/box/jdk/streamBackwardCompatibility.kt

@@ -0,0 +1,9 @@
+// TARGET_BACKEND: JVM
+// LANGUAGE_VERSION: 1.0
+// WITH_RUNTIME
+// FULL_JDK
+class A(val x: List<String>) : List<String> by x
+
+fun box(): String {
+    return A(listOf("OK"))[0]
+}