Update model files to use Qwen3-4B-INT8-INT4 from HuggingFace

Co-authored-by: kirklandsign <107070759+kirklandsign@users.noreply.github.com>

Author: Copilot

.github/workflows/android-build.yml

@@ -110,8 +110,8 @@ jobs:
         run: |
           set -e
           mkdir -p model_files
-          curl -fL -o model_files/model.pte "https://huggingface.co/pytorch/SmolLM3-3B-INT8-INT4/resolve/main/model.pte"
-          curl -fL -o model_files/tokenizer.bin "https://huggingface.co/pytorch/SmolLM3-3B-INT8-INT4/resolve/main/tokenizer.json"
+          curl -fL -o model_files/model.pte "https://huggingface.co/pytorch/Qwen3-4B-INT8-INT4/resolve/main/model.pte"
+          curl -fL -o model_files/tokenizer.bin "https://huggingface.co/pytorch/Qwen3-4B-INT8-INT4/resolve/main/tokenizer.json"
 
       - name: Run instrumentation tests
         uses: reactivecircus/android-emulator-runner@v2