Add line marker test for sealed classes #KT-20043 Fixed

idea/testData/multiModuleLineMarker/fromExpectedSealedClass/common/common.kt

@@ -0,0 +1,9 @@
+expect sealed class <lineMarker>Sealed</lineMarker> {
+
+    object <lineMarker>Sealed1</lineMarker> : Sealed
+
+    class <lineMarker>Sealed2</lineMarker> : Sealed {
+        val <lineMarker>x</lineMarker>: Int
+        fun <lineMarker>foo</lineMarker>(): String
+    }
+}