Prohibit 'expect' lateinit member properties

#KT-20319 Fixed

compiler/testData/diagnostics/tests/multiplatform/headerClass/memberPropertyKinds.kt

@@ -23,6 +23,8 @@ expect class Foo {
     <!EXPECTED_DECLARATION_WITH_BODY!>get()<!> = "no"
     <!EXPECTED_DECLARATION_WITH_BODY!>set(value)<!> {}
 
+    <!EXPECTED_LATEINIT_PROPERTY!>lateinit<!> var lateinitVar: String
+
     val delegated: String <!EXPECTED_DELEGATED_PROPERTY!>by Delegate<!>
 }
 

compiler/testData/diagnostics/tests/multiplatform/headerClass/memberPropertyKinds.txt

@@ -17,6 +17,7 @@ public final expect class Foo {
     public expect final val delegated: kotlin.String
     public expect final val justVal: kotlin.String
     public expect final var justVar: kotlin.String
+    public expect final lateinit var lateinitVar: kotlin.String
     public expect final val valWithGet: kotlin.String
     public expect final var varWithGetSet: kotlin.String
     public expect final val kotlin.String.extensionVal: kotlin.Unit

compiler/testData/diagnostics/tests/multiplatform/topLevelProperty/differentKindsOfProperties.kt

@@ -1,4 +1,4 @@
-// !LANGUAGE: +MultiPlatformProjects
+// !LANGUAGE: +MultiPlatformProjects +LateinitTopLevelProperties
 // MODULE: m1-common
 // FILE: common.kt
 
@@ -28,7 +28,7 @@ expect var customAccessorVar: String
 
 expect <!CONST_VAL_WITHOUT_INITIALIZER!>const<!> val constVal: Int
 
-<!INCOMPATIBLE_MODIFIERS!>expect<!> <!INCOMPATIBLE_MODIFIERS!>lateinit<!> var lateinitVar: String
+expect <!EXPECTED_LATEINIT_PROPERTY!>lateinit<!> var lateinitVar: String
 
 expect val delegated: String <!EXPECTED_DELEGATED_PROPERTY!>by Delegate<!>
 object Delegate { operator fun getValue(x: Any?, y: Any?): String = "" }