Without this change, HLS.js 1.5+ only allows HDR playback on
displays/systems with HDR enabled. When the server provides
two streams one HDR and one SDR for fallback, HLS.js will
ignore the HDR stream, even if the browser supports
client-side tone-mapping. This triggers unnecessary transcoding.
Signed-off-by: nyanmisaka <nst799610810@gmail.com>