introduce variable: forbid to replace write occurrences which occur after read; insert declaration after write usage (IDEA-117204)

java/java-tests/testData/refactoring/introduceVariable/WriteUsages.java

@@ -0,0 +1,8 @@
+class A {
+    {
+        String[] result = new String[1];
+        result[0] = "";
+        System.out.println(result[0]);
+        System.out.println(<selection>result[0]</selection>);
+    }  
+}