Add onGame to watcherJson
Add onGame to watcherJson

Fixes #4362

Because watcherJson doesn't have onGame data, spectators would always see the players as offline after a 'reload' event, such as a takeback.

arex1337/lila,luanlv/lila,luanlv/lila,luanlv/lila,luanlv/lila,arex1337/lila,luanlv/lila,luanlv/lila,luanlv/lila,arex1337/lila,arex1337/lila,arex1337/lila,arex1337/lila,arex1337/lila