Fix: Default value of False for compatibility with older models where the HyperParameters.data.use_jp_extra field does not exist

JP-Extra models always have use_jp_extra=True, but non-JP-Extra models do not always.

style_bert_vits2/models/hyper_parameters.py

@@ -38,7 +38,7 @@ class HyperParametersTrain(BaseModel):
 
 
 class HyperParametersData(BaseModel):
-    use_jp_extra: bool = True
+    use_jp_extra: bool = False  # このフィールドが存在しない旧モデルとの互換性のために False をデフォルト値とする
     training_files: str = "Data/Dummy/train.list"
     validation_files: str = "Data/Dummy/val.list"
     max_wav_value: float = 32768.0