Enhance quantization check for model name to include variations

nodes/base_vibevoice.py

@@ -284,7 +284,7 @@ class BaseVibeVoiceNode:
                 
                 # Check if this is a quantized model based on the model name
                 is_quantized_4bit = "Quant-4Bit" in model_name
-                is_quantized_8bit = "Quant-8Bit" in model_name  # Future support
+                is_quantized_8bit = "Quant-8Bit" in model_name or "Q8" in model_name or "8bit" in model_name.lower()
                 
                 # Prepare attention implementation kwargs
                 model_kwargs = {