Fix password reset for non-test env

Fixes `Plug.Conn.NotSentError` that causes a 5xx error in response
instead of 404 and 400.

Fixes pattern matching error caused by different response format
in test and non-test env: `Pleroma.Emails.Mailer.deliver_async` returns
:ok when PleromaJobQueue is enabled and `{:ok, _}` when it's disabled.
In tests, it's disabled.

lib/pleroma/web/mastodon_api/mastodon_api_controller.ex

@@ -1826,10 +1826,10 @@ def password_reset(conn, params) do
       |> json("")
     else
       {:error, "unknown user"} ->
-        put_status(conn, :not_found)
+        send_resp(conn, :not_found, "")
 
       {:error, _} ->
-        put_status(conn, :bad_request)
+        send_resp(conn, :bad_request, "")
     end
   end
 

lib/pleroma/web/twitter_api/twitter_api.ex

@@ -221,6 +221,8 @@ def password_reset(nickname_or_email) do
       user
       |> UserEmail.password_reset_email(token_record.token)
       |> Mailer.deliver_async()
+
+      {:ok, :enqueued}
     else
       false ->
         {:error, "bad user identifier"}

lib/pleroma/web/twitter_api/twitter_api_controller.ex

@@ -440,10 +440,10 @@ def password_reset(conn, params) do
       json_response(conn, :no_content, "")
     else
       {:error, "unknown user"} ->
-        put_status(conn, :not_found)
+        send_resp(conn, :not_found, "")
 
       {:error, _} ->
-        put_status(conn, :bad_request)
+        send_resp(conn, :bad_request, "")
     end
   end
 

test/web/mastodon_api/mastodon_api_controller_test.exs

@@ -3849,14 +3849,14 @@ test "it sends an email to user", %{user: user} do
     test "it returns 404 when user is not found", %{conn: conn, user: user} do
       conn = post(conn, "/auth/password?email=nonexisting_#{user.email}")
       assert conn.status == 404
-      refute conn.resp_body
+      assert conn.resp_body == ""
     end
 
     test "it returns 400 when user is not local", %{conn: conn, user: user} do
       {:ok, user} = Repo.update(Changeset.change(user, local: false))
       conn = post(conn, "/auth/password?email=#{user.email}")
       assert conn.status == 400
-      refute conn.resp_body
+      assert conn.resp_body == ""
     end
   end
 end

test/web/twitter_api/twitter_api_controller_test.exs

@@ -1119,14 +1119,14 @@ test "it sends an email to user", %{user: user} do
     test "it returns 404 when user is not found", %{conn: conn, user: user} do
       conn = post(conn, "/api/account/password_reset?email=nonexisting_#{user.email}")
       assert conn.status == 404
-      refute conn.resp_body
+      assert conn.resp_body == ""
     end
 
     test "it returns 400 when user is not local", %{conn: conn, user: user} do
       {:ok, user} = Repo.update(Changeset.change(user, local: false))
       conn = post(conn, "/api/account/password_reset?email=#{user.email}")
       assert conn.status == 400
-      refute conn.resp_body
+      assert conn.resp_body == ""
     end
   end