Push Down: Support moving members from Java to Kotlin class

#KT-9485 Fixed

idea/testData/refactoring/pushDown/k2k/finalClass.kt

@@ -0,0 +1,8 @@
+class <caret>A {
+    // INFO: {"checked": "true"}
+    val x = 1
+    // INFO: {"checked": "true"}
+    fun foo() {
+
+    }
+}