inline constant: ensure initial initializer is not changed

EA-93434 - IOE: CheckUtil.checkWritable

java/java-tests/testData/refactoring/inlineConstantField/QualifiedExpressionInLib.java

@@ -0,0 +1,10 @@
+class QTest {
+  {
+    System.out.println(Foo.BA<caret>R);
+  }
+}
+
+class Foo {
+  public static final String FOO = "FOO";
+  public static final String BAR = FOO;
+}