poll_view: try to read votersCount first, and then manually count local voters.

lib/pleroma/web/mastodon_api/views/poll_view.ex

@@ -71,12 +71,12 @@ defmodule Pleroma.Web.MastodonAPI.PollView do
     end)
   end
 
+  defp voters_count(%{data: %{"votersCount" => voters}}), do: voters
+
   defp voters_count(%{data: %{"voters" => [_ | _] = voters}}) do
     length(voters)
   end
 
-  defp voters_count(%{data: %{"votersCount" => voters}}), do: voters
-
   defp voters_count(_), do: 0
 
   defp voted_and_own_votes(%{object: object} = params, options) do