smart enter to wrap its single then/else branch into code blocks (IDEA-155280)

java/java-tests/testData/codeInsight/completeStatement/AddBracesToIfAndElse_after.java

@@ -0,0 +1,11 @@
+
+class Foo {
+    {
+        if (t != true) {
+            <caret>
+            logger.error("SimulationClient.run error: strategy () still running. please stop it before restart.");
+        } else {
+            proxy.startStopStrategy("strategyName", true);
+        }
+    }
+}