Tidy TQRootBean constructor for alias.

Note that this requires the updated ebean-agent, where it will not longer use the setRoot() method which has now been removed.

ebean-querybean/pom.xml

@@ -96,11 +96,11 @@
       <plugin>
         <groupId>io.repaint.maven</groupId>
         <artifactId>tiles-maven-plugin</artifactId>
-        <version>2.34</version>
+        <version>2.40</version>
         <extensions>true</extensions>
         <configuration>
           <tiles>
-            <tile>io.ebean.tile:enhancement:13.22.0</tile>
+            <tile>io.ebean.tile:enhancement:14.0.3</tile>
           </tiles>
         </configuration>
       </plugin>

ebean-querybean/src/main/java/io/ebean/typequery/TQRootBean.java

@@ -132,9 +132,10 @@ public abstract class TQRootBean<T, R> {
    * Construct for using as an 'Alias' to use the properties as known string
    * values for select() and fetch().
    */
+  @SuppressWarnings("unchecked")
   public TQRootBean(boolean aliasDummy) {
     this.query = null;
-    this.root = null;
+    this.root = (R) this;
   }
 
   /** Construct for FilterMany */