Update parsing of ytInitialData (#1427)

Update parsing of ytInitialData

src/invidious/helpers/helpers.cr

@@ -597,7 +597,7 @@ def create_notification_stream(env, topics, connection_channel)
 end
 
 def extract_initial_data(body) : Hash(String, JSON::Any)
-  initial_data = body.match(/window\["ytInitialData"\]\s*=\s*(?<info>.*?);+\n/).try &.["info"] || "{}"
+  initial_data = body.match(/(window\["ytInitialData"\]|var\s+ytInitialData)\s*=\s*(?<info>.*?);+\s*\n/).try &.["info"] || "{}"
   if initial_data.starts_with?("JSON.parse(\"")
     return JSON.parse(JSON.parse(%({"initial_data":"#{initial_data[12..-3]}"}))["initial_data"].as_s).as_h
   else

src/invidious/videos.cr

@@ -839,7 +839,7 @@ def extract_polymer_config(body)
     params[f] = player_response[f] if player_response[f]?
   end
 
-  yt_initial_data = body.match(/window\["ytInitialData"\]\s*=\s*(?<info>.*?);\n/)
+  yt_initial_data = body.match(/(window\["ytInitialData"\]|var\s+ytInitialData)\s*=\s*(?<info>.*?);\s*\n/)
     .try { |r| JSON.parse(r["info"]).as_h }
 
   params["relatedVideos"] = yt_initial_data.try &.["playerOverlays"]?.try &.["playerOverlayRenderer"]?