fix: Update the link used for email address change in the confirmation mail (#5937)

app/views/devise/mailer/confirmation_instructions.html.erb

@@ -11,9 +11,11 @@
 <p>You can confirm your account email through the link below:</p>
 <% end %>
 
-<% if @resource.confirmed? %>
+<% if @resource.unconfirmed_email.present? %>
+<p><%= link_to 'Confirm my account', frontend_url('auth/confirmation', confirmation_token: @token) %></p>
+<% elsif @resource.confirmed? %>
 <p><%= link_to 'Login to my account', frontend_url('auth/sign_in') %></p>
-<% elsif account_user&.inviter.present? && @resource.unconfirmed_email.blank?  %>
+<% elsif account_user&.inviter.present? %>
 <p><%= link_to 'Confirm my account', frontend_url('auth/password/edit', reset_password_token: @resource.send(:set_reset_password_token)) %></p>
 <% else %>
 <p><%= link_to 'Confirm my account', frontend_url('auth/confirmation', confirmation_token: @token) %></p>

spec/mailers/confirmation_instructions_spec.rb

@@ -63,6 +63,21 @@ RSpec.describe 'Confirmation Instructions', type: :mailer do
       end
     end
 
+    context 'when user is confirmed and updates the email' do
+      before do
+        confirmable_user.confirm
+        confirmable_user.update!(email: 'user@example.com')
+      end
+
+      it 'sends a confirmation link' do
+        confirmation_mail = Devise::Mailer.confirmation_instructions(confirmable_user.reload, nil, {})
+
+        expect(confirmation_mail.body).to include('app/auth/confirmation?confirmation_token')
+        expect(confirmation_mail.body).not_to include('app/auth/password/edit')
+        expect(confirmable_user.unconfirmed_email.blank?).to be false
+      end
+    end
+
     context 'when user already confirmed' do
       before do
         confirmable_user.confirm