Flux2 nvfp4 quantization correctness on Blackwell (B200) (#23625)

.github/workflows/pr-test-multimodal-gen.yml

@@ -275,19 +275,13 @@ jobs:
           artifact-suffix: component-accuracy
 
   multimodal-gen-test-1-b200:
-    # TODO: Temporarily disabled (`if: false`) — deterministically failing
-    # with `RobertaProcessing.__new__() got an unexpected keyword argument
-    # 'cls'` (tokenizer/transformers compatibility) and blocking CI.
-    # Restore the original `if:` condition (commented below) once the
-    # underlying fix lands.
-    if: false
-    # if: |
-    #   (inputs.target_stage == 'multimodal-gen-test-1-b200') ||
-    #   (
-    #     !inputs.target_stage &&
-    #     ((github.event_name == 'schedule' || inputs.test_parallel_dispatch == 'true') || (inputs.caller_needs_failure != 'true' && !cancelled())) &&
-    #     inputs.multimodal_gen == 'true'
-    #   )
+    if: |
+      (inputs.target_stage == 'multimodal-gen-test-1-b200') ||
+      (
+        !inputs.target_stage &&
+        ((github.event_name == 'schedule' || inputs.test_parallel_dispatch == 'true') || (inputs.caller_needs_failure != 'true' && !cancelled())) &&
+        inputs.multimodal_gen == 'true'
+      )
     runs-on: ${{ inputs.b200_runner }}
     timeout-minutes: 240
     steps: