update backing field references when renaming Kotlin property

#KT-7905 Fixed

idea/testData/refactoring/rename/renameKotlinValPropertyInCompanionObject/after/RenameKotlinValPropertyInCompanionObject.kt

@@ -0,0 +1,7 @@
+package testing.rename
+
+class Foo {
+    companion object {
+        val SECOND = 111
+    }
+}

idea/testData/refactoring/rename/renameKotlinValPropertyInCompanionObject/after/testing/JavaClient.java

@@ -0,0 +1,9 @@
+package testing;
+
+import testing.rename.*;
+
+class JavaClient {
+    public int foo() {
+        return Foo.SECOND;
+    }
+}

idea/testData/refactoring/rename/renameKotlinValPropertyInCompanionObject/before/RenameKotlinValPropertyInCompanionObject.kt

@@ -0,0 +1,7 @@
+package testing.rename
+
+class Foo {
+    companion object {
+        val FIRST = 111
+    }
+}

idea/testData/refactoring/rename/renameKotlinValPropertyInCompanionObject/before/testing/JavaClient.java

@@ -0,0 +1,9 @@
+package testing;
+
+import testing.rename.*;
+
+class JavaClient {
+    public int foo() {
+        return Foo.FIRST;
+    }
+}

idea/testData/refactoring/rename/renameKotlinValPropertyInCompanionObject/renameKotlinValPropertyInCompanionObject.test

@@ -0,0 +1,6 @@
+{
+  "type": "KOTLIN_PROPERTY",
+  "classId": "testing/rename/Foo.Companion",
+  "oldName": "FIRST",
+  "newName": "SECOND"
+}

idea/testData/refactoring/rename/renameKotlinValPropertyInObject/after/RenameKotlinValPropertyInObject.kt

@@ -0,0 +1,5 @@
+package testing.rename
+
+object Foo {
+    val SECOND = 111
+}

idea/testData/refactoring/rename/renameKotlinValPropertyInObject/after/testing/JavaClient.java

@@ -0,0 +1,9 @@
+package testing;
+
+import testing.rename.*;
+
+class JavaClient {
+    public int foo() {
+        return Foo.SECOND;
+    }
+}

idea/testData/refactoring/rename/renameKotlinValPropertyInObject/before/RenameKotlinValPropertyInObject.kt

@@ -0,0 +1,5 @@
+package testing.rename
+
+object Foo {
+    val FIRST = 111
+}

idea/testData/refactoring/rename/renameKotlinValPropertyInObject/before/testing/JavaClient.java

@@ -0,0 +1,9 @@
+package testing;
+
+import testing.rename.*;
+
+class JavaClient {
+    public int foo() {
+        return Foo.FIRST;
+    }
+}

idea/testData/refactoring/rename/renameKotlinValPropertyInObject/renameKotlinValPropertyInObject.test

@@ -0,0 +1,6 @@
+{
+  "type": "KOTLIN_PROPERTY",
+  "classId": "testing/rename/Foo",
+  "oldName": "FIRST",
+  "newName": "SECOND"
+}