Higgs-Audio v2 (HiggsAudioV2ForConditionalGeneration, #3762) is included in the v0.22.0 release but was missing from the supported models table. Higgs-Audio v3 (#4169) landed after the v0.22.0 cut and is intentionally not listed here. Signed-off-by: Yueqian Lin <linyueqian@outlook.com>