Refactor(preparable-interface): Update for Struts 7 compatibility

- Added `@StrutsParameter` annotations to action parameter setter or getter.
- Added `OGNL allowlist` to comply with stricter security policies.
- Updated `web.xml` to schema version 6.0.

Author: fp024

preparable-interface/src/main/java/org/apache/struts/edit/action/EditAction.java

@@ -10,6 +10,7 @@
 import org.apache.struts.edit.service.EditServiceInMemory;
 import org.apache.struts2.ActionSupport;
 import org.apache.struts2.Preparable;
+import org.apache.struts2.interceptor.parameter.StrutsParameter;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -62,6 +63,7 @@ public String input() throws Exception {
         return INPUT;
     }
 
+    @StrutsParameter(depth = 1)
     public Person getPersonBean() {
         return personBean;
     }

preparable-interface/src/main/resources/struts.xml

@@ -6,9 +6,10 @@
 <struts>
 
 	<constant name="struts.devMode" value="true" />
+  <constant name="struts.allowlist.classes" value="org.apache.struts.edit.model.Person" />
 
 	<package name="basicstruts2" extends="struts-default">
-
+		<default-action-ref name="index" />
         <!-- If no class attribute is specified the framework will assume success and
         render the result index.jsp -->
         <!-- If no name value for the result node is specified the success value is the default -->

preparable-interface/src/main/webapp/WEB-INF/web.xml

@@ -1,5 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
+<web-app id="WebApp_ID" version="6.0"
+    xmlns="https://jakarta.ee/xml/ns/jakartaee"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_6_0.xsd">
 <display-name>Preparable Interface</display-name>
   <welcome-file-list>
     <welcome-file>index.jsp</welcome-file>