Minor. Merge multiplatformTypeRefinement testdata with multiplatform testdata

idea/testData/multiplatform/languageConstructions/jvm/jvm.kt

@@ -0,0 +1,14 @@
+@file:Suppress("UNUSED_PARAMETER")
+
+package sample
+
+actual data class A(actual val x: Int, actual val y: Double, val t: String)  {
+    actual fun commonFun() {}
+    fun platformFun() {}
+
+    actual val z: String by lazy { "" }
+
+    operator fun iterator(): Iterator<Int> = null!!
+}
+
+fun testDelegate(): String = getCommonA().z