Add investment name to vote links aria-label

Note we're using the `budgets.investments.investment.add_label` and
`budgets.ballots.show.remove_label` internationalization keys so they're
consistent with the `budgets.investments.investment.add` and
`budgets.ballots.show.remove` keys which were already present. We aren't
unifying these keys in order to keep existing translations.

app/components/budgets/investments/ballot_component.html.erb

@@ -14,7 +14,8 @@
                                             investments_ids: investment_ids),
                     class: "button button-remove-support expanded",
                     method: :delete,
-                    remote: true %>
+                    remote: true,
+                    "aria-label": remove_vote_aria_label %>
       <% end %>
     </div>
   <% else %>
@@ -30,7 +31,8 @@
                     class: "button button-support expanded",
                     title: t("budgets.investments.investment.support_title"),
                     method: :post,
-                    remote: true %>
+                    remote: true,
+                    "aria-label": vote_aria_label %>
       <% end %>
     </div>
   <% end %>

app/components/budgets/investments/ballot_component.rb

@@ -24,6 +24,14 @@ class Budgets::Investments::BallotComponent < ApplicationComponent
       @reason ||= investment.reason_for_not_being_ballotable_by(current_user, ballot)
     end
 
+    def vote_aria_label
+      t("budgets.investments.investment.add_label", investment: investment.title)
+    end
+
+    def remove_vote_aria_label
+      t("budgets.ballots.show.remove_label", investment: investment.title)
+    end
+
     def link_to_my_heading
       link_to(investment.heading.name,
               budget_investments_path(budget_id: investment.budget_id,