SortContentAction: fix javadoc movement while sorting enum constants

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/sortContent/afterEnumJavadoc.java

@@ -0,0 +1,17 @@
+// "Sort content" "true"
+
+public enum OSType {
+    /**
+     * one
+     */
+    ONE,
+    /**
+     * three
+     */
+    THREE,
+    /**
+     * two
+     */
+    TWO
+
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/sortContent/beforeEnumJavadoc.java

@@ -0,0 +1,16 @@
+// "Sort content" "true"
+
+public enum OSType {
+  /**
+   * one
+   */
+  ONE,<caret>
+  /**
+   * two
+   */
+  TWO,
+  /**
+   * three
+   */
+  THREE
+}