fix: Add accessible attribute to the xml tree in case of useJSONSource (

#2484)

* Added accessible attribute to the xml tree in case of useJSONSource capability

With useJSONSource as false, source contains accessible attribute but with useJSONSource as true, it bypasses this.

* added missing comment

lib/commands/source.js

@@ -56,10 +56,12 @@ const helpers = {
  * ```js
  *   { isEnabled: '1',
  *     isVisible: '1',
+ *     isAccessible: '1',
  *     frame: '{{0, 0}, {375, 667}}',
  *     children:
  *      [ { isEnabled: '1',
  *          isVisible: '1',
+ *          isAccessible: '1',
  *          frame: '{{0, 0}, {375, 667}}',
  *          children: [],
  *          rect: { x: 0, y: 0, width: 375, height: 667 },
@@ -89,6 +91,7 @@ function getTreeForXML(srcTree) {
         type: `XCUIElementType${element.type}`,
         enabled: parseInt(element.isEnabled, 10) === 1,
         visible: parseInt(element.isVisible, 10) === 1,
+        accessible: parseInt(element.isAccessible, 10) === 1,
         x: rect.x,
         y: rect.y,
         width: rect.width,