feat: select first LoRA upon initialization

modeling_lora.py

@@ -181,6 +181,7 @@ class BertLoRA(BertPreTrainedModel):
         for name, param in super().named_parameters():
             if "lora" not in name:
                 param.requires_grad_(False)
+        self.select_task(0)
 
     def from_bert(self, *args, num_adaptions=1, **kwargs):
         self.bert = BertModel.from_pretrained(*args, **kwargs)