Don't allow changing answers if the poll has started

Just like we did with questions.

spec/components/admin/poll/questions/answers/table_actions_component_spec.rb

@@ -0,0 +1,21 @@
+require "rails_helper"
+
+describe Admin::Poll::Questions::Answers::TableActionsComponent, controller: Admin::BaseController do
+  before { sign_in(create(:administrator).user) }
+
+  it "displays the edit action when the poll has not started" do
+    answer = create(:poll_question_answer, poll: create(:poll, :future))
+
+    render_inline Admin::Poll::Questions::Answers::TableActionsComponent.new(answer)
+
+    expect(page).to have_link "Edit"
+  end
+
+  it "does not display the edit action when the poll has started" do
+    answer = create(:poll_question_answer, poll: create(:poll))
+
+    render_inline Admin::Poll::Questions::Answers::TableActionsComponent.new(answer)
+
+    expect(page).not_to have_link "Edit"
+  end
+end