[Test] Move KotlinAgainstKotlin tests under BlackBoxCodegen tests

compiler/testData/codegen/box/compileKotlinAgainstKotlin/privateTopLevelValInDifferentModule.kt

@@ -0,0 +1,21 @@
+// !LANGUAGE: +InlineClasses
+// IGNORE_BACKEND: JS_IR, JS, NATIVE
+// WITH_REFLECT
+
+// MODULE: lib
+// FILE: A.kt
+package a
+
+import kotlin.reflect.jvm.isAccessible
+
+inline class S(val s: String)
+
+private val ok = S("OK")
+
+val ref = ::ok.apply { isAccessible = true }
+
+// MODULE: main(lib)
+// FILE: B.kt
+import a.*
+
+fun box() = ref.call().s