post init on conditional generation

modular_isaac.py

@@ -1392,6 +1392,7 @@ class IsaacForConditionalGeneration(Qwen3ForCausalLM, GenerationMixin):
         self.rope_deltas = None
 
         self.config = config
+        self.post_init()
 
     def get_rope_index(
         self,