Minor. Merge multiplatformTypeRefinement testdata with multiplatform testdata

idea/testData/multiplatform/diamondModuleDependency2/common-1/common-1.kt

@@ -0,0 +1,21 @@
+@file:Suppress("UNUSED_PARAMETER")
+package sample
+
+interface AA
+interface BB
+interface CC
+interface DD
+
+expect interface A {
+    fun foo_A()
+}
+
+fun take0(x: A): AA = null!!
+fun take1(x: A): AA = null!!
+fun take2(x: A): AA = null!!
+fun take3(x: A): AA = null!!
+fun take4(x: A): AA = null!!
+
+fun test(x: A) {
+    take4(x)
+}