Remove shorts from Subscriptions tab

[JaCzekanski]

This PR adds filtering of JSON nodes containing reelWatchEndpoint which is an indicator that given video is a reel/short. Due to the convoluted format of JSON responses, it might not cover all of the cases.

Reel playback seems broken on TVs and I don't really care about having them, as it's ofter reused content. Please note that it'll only work on the Subscriptions tab (which is the one I use the most). However, It should be pretty easy to extend it to other tabs and search results.

Before:

After:

Green settings menu: