erp5_web_renderjs_ui: textarea propagate the required field

erp5_ui_test: textarea use an external validator as required prevent submitting

bt5/erp5_ui_test/SkinTemplateItem/portal_skins/erp5_ui_test/Foo_viewDialogWithValidationErrorDialog/your_fifth_failure.xml

@@ -225,7 +225,9 @@
                 </item>
                 <item>
                     <key> <string>external_validator</string> </key>
-                    <value> <string></string> </value>
+                    <value>
+                      <persistent> <string encoding="base64">AAAAAAAAAAI=</string> </persistent>
+                    </value>
                 </item>
                 <item>
                     <key> <string>extra</string> </key>
@@ -253,7 +255,7 @@
                 </item>
                 <item>
                     <key> <string>required</string> </key>
-                    <value> <int>1</int> </value>
+                    <value> <int>0</int> </value>
                 </item>
                 <item>
                     <key> <string>title</string> </key>
@@ -277,4 +279,17 @@
       </dictionary>
     </pickle>
   </record>
+  <record id="2" aka="AAAAAAAAAAI=">
+    <pickle>
+      <global name="Method" module="Products.Formulator.MethodField"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>method_name</string> </key>
+            <value> <string>Foo_getDialogWithValidationError</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
 </ZopeData>

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_textareafield_js.js

@@ -17,6 +17,7 @@
           error_text: field_json.error_text,
           title: field_json.description,
           hidden: field_json.hidden,
+          required: field_json.required,
           // Force calling subfield render
           // as user may have modified the input value
           render_timestamp: new Date().getTime()

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_textareafield_js.xml

@@ -240,7 +240,7 @@
                   </item>
                   <item>
                       <key> <string>serial</string> </key>
-                      <value> <string>988.26496.42040.8686</string> </value>
+                      <value> <string>989.27523.29749.43383</string> </value>
                   </item>
                   <item>
                       <key> <string>state</string> </key>
@@ -258,7 +258,7 @@
                           </tuple>
                           <state>
                             <tuple>
-                              <float>1609253264.97</float>
+                              <float>1614692613.61</float>
                               <string>UTC</string>
                             </tuple>
                           </state>