Video backdrop navbar overlap & screensaver activating during playback on TV client

1. Video Backdrop Overlaps Left Navigation Sidebar Description: On the TV client view (specifically on movie/series details pages), the background video backdrop fails to respect the boundaries of the left-hand navigation sidebar. Instead of sizing properly, the left edge of the video cuts off abruptly halfway through the navigation icons, leaving an awkward overlap. Expected Behavior: Ideally, the background video/backdrop should span edge-to-edge across the entire screen—sitting cleanly behind a translucent navigation sidebar for a much cleaner, full-screen look. If full-screen scaling isn't feasible due to layout constraints, adding a smooth dark gradient fade or blur along the left edge of the video would keep it from looking abruptly cut off behind the navbar icons. 2. Screensaver Covers Active Theme Video and Trailer Playback Description: While a theme video or trailer backdrop is actively playing on a media details page, Jellywatch's built-in screensaver still triggers and covers the screen. Notably, the theme audio continues playing underneath, meaning playback isn't interrupted—the screensaver simply hides the active video visually. Expected Behavior: Active playback of theme videos and trailers should suppress the screensaver from appearing. The screensaver inactivity countdown should only start after the video backdrops have finished playing.