Regression from #4037 | Fix storyboards

PR #4037 introduced a workaround around YouTube's new integrity checks
on streaming URLs. However, the usage of this workaround prevents
storyboard data from being returned by InnerTube.

This commit fixes that by only using the workaround when calling try_fetch_streaming_data

src/invidious/videos/parser.cr

@@ -55,9 +55,7 @@ def extract_video_info(video_id : String, proxy_region : String? = nil)
   client_config = YoutubeAPI::ClientConfig.new(proxy_region: proxy_region)
 
   # Fetch data from the player endpoint
-  # CgIQBg is a workaround for streaming URLs that returns a 403.
-  # See https://github.com/iv-org/invidious/issues/4027#issuecomment-1666944520
-  player_response = YoutubeAPI.player(video_id: video_id, params: "CgIQBg", client_config: client_config)
+  player_response = YoutubeAPI.player(video_id: video_id, params: "", client_config: client_config)
 
   playability_status = player_response.dig?("playabilityStatus", "status").try &.as_s
 
@@ -120,6 +118,9 @@ def extract_video_info(video_id : String, proxy_region : String? = nil)
 
   # Replace player response and reset reason
   if !new_player_response.nil?
+    # Preserve storyboard data before replacement
+    new_player_response["storyboards"] = player_response["storyboards"] if player_response["storyboards"]?
+
     player_response = new_player_response
     params.delete("reason")
   end