SDK / exoplayer

NPE in toneMap_hlgFrame_matchesGoldenFile and toneMap_pqFrame_matchesGoldenFile was created because a uEnableColorTransfer uniform was being created on the HDR path, when HDR shader files don't have this uniform. (they don't support disable color transfers right now)

Fix: only create the uniform when input is SDR.

manually tested on failing tests

PiperOrigin-RevId: 522002603