slapos_jio: Don't display "ERROR" as parameter and define default

   Keep the xml_output as it is even if the form is Invalid, this allow the user force post (since it is the user decision).

   If the textarea is blank/empty, add the default xml (empty values) in place, otherwise the user cannot re-render the parameter form back.

master/bt5/slapos_jio/PathTemplateItem/web_page_module/rjs_gadget_erp5_page_slap_parameter_form_js.js

@@ -609,7 +609,7 @@
             divm.querySelector("span.error").textContent = validation.missing[missing_index].message;
           }
         }
-        return "ERROR";
+        return xml_output;
       });
   }
 
@@ -1058,6 +1058,11 @@
             content_dict.shared = 1;
           }
           if (text_content !== null) {
+            // Don't provide blank string since the parameter will not able to load
+            // itself. If the user removed the values, provide an empty parameter default.
+            if (text_content.value === "") {
+              return '<?xml version="1.0" encoding="utf-8" ?><instance></instance>';
+            }
             return text_content.value;
           }
           return checkValidity(gadget);

master/bt5/slapos_jio/PathTemplateItem/web_page_module/rjs_gadget_erp5_page_slap_parameter_form_js.xml

@@ -280,7 +280,7 @@
                   </item>
                   <item>
                       <key> <string>serial</string> </key>
-                      <value> <string>1000.9806.10724.60689</string> </value>
+                      <value> <string>1000.12486.34916.20633</string> </value>
                   </item>
                   <item>
                       <key> <string>state</string> </key>
@@ -298,7 +298,7 @@
                           </tuple>
                           <state>
                             <tuple>
-                              <float>1652220502.37</float>
+                              <float>1652455157.55</float>
                               <string>UTC</string>
                             </tuple>
                           </state>