Move result percentages out of the voting buttons

Having buttons (previously links) with the text "I agree 75%" is
confusing; people might believe they're saying they only partially agree
with the content. Besides, the results percentages is a different piece
of information which shouldn't be related to whether one person
agrees/disagrees with the content.

This problem might be solved for people using screen readers since we
added the aria-label attribute. However, for sighted keyboard users, the
percentage was being outlined on focus as part of the button, which
might be confusing.

spec/components/debates/votes_component_spec.rb

@@ -25,5 +25,19 @@ describe Debates::VotesComponent do
       expect(page).to have_button "I don't agree with What about the 2030 agenda?"
       expect(page).not_to have_content "You must sign in or sign up to continue."
     end
+
+    it "does not include result percentages" do
+      create(:vote, votable: debate)
+      sign_in(create(:user))
+
+      render_inline component
+
+      expect(page).to have_button count: 2
+      expect(page).to have_button "I agree"
+      expect(page).to have_button "I disagree"
+      expect(page).not_to have_button text: "%"
+      expect(page).not_to have_button text: "100"
+      expect(page).not_to have_button text: "0"
+    end
   end
 end