[FIX] website, *: remove number of subscribers on website form

*: website_mass_mailing

Before this commit, when a "Form" snippet was added and the action was
changed to "Subscribe to Newsletter", the mailing lists appeared as
checkbox fields with the number of subscribers in parentheses. This
commit removes the display of this unnecessary information.

Steps to reproduce:

- Install the "Email Marketing" module and Website.
- Navigate to the Website in edit mode.
- Drag & drop the "Form" block (dynamic content section).
- Change the form action by setting the "Action" option to "Subscribe to
  Newsletter".

Bug: The number of subscribers appears next to the mailing list names.

task-3472820

closes odoo/odoo#163336

X-original-commit: a060a1981074a83b77b28f70b49127ecb6f4f550
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>
Co-authored-by: Adrien Milis <miad@odoo.com>

addons/website/static/src/snippets/s_website_form/options.js

@@ -71,7 +71,11 @@ const FormEditor = options.Class.extend({
                 display_name: el[1],
             }));
         } else if (field.relation && field.relation !== 'ir.attachment') {
-            field.records = await this.orm.searchRead(field.relation, field.domain || [], ["display_name"]);
+            const fieldNames = field.fieldName ? [field.fieldName] : ["display_name"];
+            field.records = await this.orm.searchRead(field.relation, field.domain || [], fieldNames);
+            if (field.fieldName) {
+                field.records.forEach(r => r["display_name"] = r[field.fieldName]);
+            }
         }
         return field.records;
     },

addons/website_mass_mailing/static/src/js/mass_mailing_form_editor.js

@@ -7,18 +7,21 @@ FormEditorRegistry.add('create_mailing_contact', {
     formFields: [{
         name: 'name',
         required: true,
+        fillWith: "name",
         string: _t('Your Name'),
         type: 'char',
     }, {
         name: 'email',
-        required: true,
+        modelRequired: true,
+        fillWith: "email",
         string: _t('Your Email'),
         type: 'email',
     }, {
         name: 'list_ids',
         relation: 'mailing.list',
-        required: true,
+        modelRequired: true,
         string: _t('Subscribe to'),
         type: 'many2many',
+        fieldName: "name",
     }],
 });