MoveFieldAssignmentToInitializer: disable for self-references

Fixes IDEA-174956 "Move assignment to field declaration" produces red code

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/moveFieldAssignmentToInitializer/beforeSelfRef.java

@@ -0,0 +1,11 @@
+// "Move assignment to field declaration" "false"
+
+class Foo {
+  int[] s;
+
+  void foo() {
+    if (s != null) {
+      s = s.cl<caret>one();
+    }
+  }
+}