Change email address input to be disabled for logged-in users when requesting a new confirmation e-mail (#23247)

Fixes #23093

app/views/auth/confirmations/new.html.haml

@@ -5,7 +5,7 @@
   = render 'shared/error_messages', object: resource
 
   .fields-group
-    = f.input :email, autofocus: true, wrapper: :with_label, label: t('simple_form.labels.defaults.email'), input_html: { 'aria-label': t('simple_form.labels.defaults.email') }, hint: false
+    = f.input :email, autofocus: true, wrapper: :with_label, label: t('simple_form.labels.defaults.email'), input_html: { 'aria-label': t('simple_form.labels.defaults.email') }, readonly: current_user.present?, hint: current_user.present? && t('auth.confirmations.wrong_email_hint')
 
   .actions
     = f.button :button, t('auth.resend_confirmation'), type: :submit

config/locales/en.yml

@@ -965,6 +965,8 @@ en:
   auth:
     apply_for_account: Request an account
     change_password: Password
+    confirmations:
+      wrong_email_hint: If that e-mail address is not correct, you can change it in account settings.
     delete_account: Delete account
     delete_account_html: If you wish to delete your account, you can <a href="%{path}">proceed here</a>. You will be asked for confirmation.
     description: