call post_init() in MiniCPMV to restore transformers compatibility

modeling_minicpmv.py

@@ -30,6 +30,7 @@ class MiniCPMV(MiniCPMVPreTrainedModel):
         self.processor = None
 
         self.terminators = ['<|im_end|>', '<|endoftext|>']
+        self.post_init()
 
     def init_vision_module(self):
         # same as HuggingFaceM4/siglip-so400m-14-980-flash-attn2-navit add tgt_sizes