Inline function: add extra tests taken from intellij-community

idea/testData/refactoring/inline/function/fromIntellij/InaccessibleFieldInSuperclass.kt

@@ -0,0 +1,13 @@
+class A {
+    private val i = 0
+
+    fun foo() {
+        i.toString()
+    }
+}
+
+class B : A() {
+    fun bar() {
+        <caret>foo()
+    }
+}