UX: make name optional for confirmation user field (#7149)

spec/models/user_field_spec.rb

@@ -0,0 +1,13 @@
+require 'rails_helper'
+
+describe UserField do
+  describe "doesn't validate presence of name if field type is 'confirm'" do
+    subject { described_class.new(field_type: 'confirm') }
+    it { is_expected.not_to validate_presence_of :name }
+  end
+
+  describe "validates presence of name for other field types" do
+    subject { described_class.new(field_type: 'dropdown') }
+    it { is_expected.to validate_presence_of :name }
+  end
+end