[Voxtral models] Skip warm-up to skip confusing error message in warm-up (#33576)

Signed-off-by: Patrick von Platen <patrick.v.platen@gmail.com>
Co-authored-by: Cyrus Leung <tlleungac@connect.ust.hk>

vllm/model_executor/models/voxtral.py

@@ -335,6 +335,9 @@ class VoxtralForConditionalGeneration(
     nn.Module, SupportsMultiModal, SupportsPP, SupportsLoRA, SupportsTranscription
 ):
     supported_languages = ISO639_1_SUPPORTED_LANGS
+    # transformers' currently has limited support for MistralCommon backend
+    # and cached_get_processor. Let's skip until fixed
+    skip_warmup_audio_preprocessing = True
 
     packed_modules_mapping = {
         "qkv_proj": ["q_proj", "k_proj", "v_proj"],