slapos_jio_ui_test: Use change rather then click to trigger checkValidity

   Click only works when you click on buttons, while change quite often calls getContent/checkValidity, causing the this test to be more stable.

master/bt5/slapos_jio_ui_test/PathTemplateItem/portal_tests/slaposjs_zuite/testSlapOSJSTestParameterEditorXMLRequired.zpt

@@ -88,9 +88,9 @@
         <td></td>
       </tr>
       <tr>
-        <td>click</td>
+        <td>type</td>
         <td>//input[@name="//simple-string" and @type="text"]</td>
-        <td></td>
+        <td>x</td>
       </tr>
       
       <tr>
@@ -104,7 +104,17 @@
         <td></td>
       </tr>
       <tr>
-        <td>click</td>
+        <td>select</td>
+        <td>//select[@name="//simple-string-with-enum"]</td>
+        <td>simple string B</td>
+      </tr>
+      <tr>
+        <td>type</td>
+        <td>//input[@name="//simple-string" and @type="text"]</td>
+        <td></td>
+      </tr>
+      <tr>
+        <td>select</td>
         <td>//select[@name="//simple-string-with-enum"]</td>
         <td></td>
       </tr>
@@ -222,7 +232,6 @@
         <td></td>
       </tr>
 
-
       <tr>
         <td colspan="3"><b> Fill the simple string</b></td>
       </tr>