Voxtral Realtime: enable streaming mode in CUDA CI (#17844)

Remove the vr-offline override so the CUDA CI runs Voxtral Realtime
in streaming mode (the default). The streaming encoder path exercises
the full pipeline including ring buffer KV cache and incremental mel
processing.

Author: mergennachin

.github/workflows/cuda.yml

@@ -159,7 +159,7 @@ jobs:
               repo: "google"
               name: "gemma-3-4b-it"
             quant: "quantized-int4-weight-only"
-          # Voxtral Realtime only supports int4-tile-packed on CUDA (offline mode)
+          # Voxtral Realtime only supports int4-tile-packed on CUDA
           - model:
               repo: "mistralai"
               name: "Voxtral-Mini-4B-Realtime-2602"
@@ -197,12 +197,7 @@ jobs:
           echo "::endgroup::"
         fi
 
-        # Voxtral Realtime uses offline mode for CUDA CI (not streaming)
-        VR_MODE=""
-        if [ "${{ matrix.model.name }}" = "Voxtral-Mini-4B-Realtime-2602" ]; then
-          VR_MODE="vr-offline"
-        fi
-        source .ci/scripts/export_model_artifact.sh cuda "${{ matrix.model.repo }}/${{ matrix.model.name }}" "${{ matrix.quant }}" "${RUNNER_ARTIFACT_DIR}" "$VR_MODE"
+        source .ci/scripts/export_model_artifact.sh cuda "${{ matrix.model.repo }}/${{ matrix.model.name }}" "${{ matrix.quant }}" "${RUNNER_ARTIFACT_DIR}"
 
   test-model-cuda-e2e:
     name: test-model-cuda-e2e
@@ -237,7 +232,7 @@ jobs:
               repo: "google"
               name: "gemma-3-4b-it"
             quant: "quantized-int4-weight-only"
-          # Voxtral Realtime only supports int4-tile-packed on CUDA (offline mode)
+          # Voxtral Realtime only supports int4-tile-packed on CUDA
           - model:
               repo: "mistralai"
               name: "Voxtral-Mini-4B-Realtime-2602"
@@ -256,12 +251,7 @@ jobs:
       download-artifact: ${{ matrix.model.repo }}-${{ matrix.model.name }}-cuda-${{ matrix.quant }}
       ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.sha || github.sha }}
       script: |
-        # Voxtral Realtime uses offline mode for CUDA CI (not streaming)
-        VR_MODE=""
-        if [ "${{ matrix.model.name }}" = "Voxtral-Mini-4B-Realtime-2602" ]; then
-          VR_MODE="vr-offline"
-        fi
-        source .ci/scripts/test_model_e2e.sh cuda "${{ matrix.model.repo }}/${{ matrix.model.name }}" "${{ matrix.quant }}" "${RUNNER_ARTIFACT_DIR}" "$VR_MODE"
+        source .ci/scripts/test_model_e2e.sh cuda "${{ matrix.model.repo }}/${{ matrix.model.name }}" "${{ matrix.quant }}" "${RUNNER_ARTIFACT_DIR}"
 
   test-cuda-pybind:
     name: test-cuda-pybind