[LoRA][BugFix] Fix skipped LoRA adapters for Mistral3 (#36928)

Signed-off-by: Woosuk Kwon <woosuk@inferact.ai>

vllm/model_executor/models/mistral3.py

@@ -429,6 +429,9 @@ class Mistral3ForConditionalGeneration(
             "model.vision_tower.": "vision_tower.",
             "model.multi_modal_projector.": "multi_modal_projector.",
             "lm_head.": "language_model.lm_head.",
+            # Some PEFT LoRAs are trained against the text submodule directly
+            # and produce names like `base_model.model.model.layers.*`.
+            "model.": "language_model.model.",
         }
     )