Mastodon API Poll view: Fix handling of polls without an end date

test/support/http_request_mock.ex

@@ -992,6 +992,18 @@ defmodule HttpRequestMock do
     {:ok, %Tesla.Env{status: 200, body: File.read!("test/fixtures/rel_me_null.html")}}
   end
 
+  def get("https://skippers-bin.com/notes/7x9tmrp97i", _, _, _) do
+    {:ok,
+     %Tesla.Env{
+       status: 200,
+       body: File.read!("test/fixtures/tesla_mock/misskey_poll_no_end_date.json")
+     }}
+  end
+
+  def get("https://skippers-bin.com/users/7v1w1r8ce6", _, _, _) do
+    {:ok, %Tesla.Env{status: 200, body: File.read!("test/fixtures/tesla_mock/sjw.json")}}
+  end
+
   def get(url, query, body, headers) do
     {:error,
      "Mock response not implemented for GET #{inspect(url)}, #{query}, #{inspect(body)}, #{