[diffusion] CI: fix CI test case skip problem (#15874)

Co-authored-by: Mick <mickjagger19@icloud.com>

python/sglang/multimodal_gen/runtime/managers/gpu_worker.py

@@ -26,7 +26,10 @@ from sglang.multimodal_gen.runtime.utils.logging_utils import (
     globally_suppress_loggers,
     init_logger,
 )
-from sglang.multimodal_gen.runtime.utils.perf_logger import PerformanceLogger
+from sglang.multimodal_gen.runtime.utils.perf_logger import (
+    PerformanceLogger,
+    StageProfiler,
+)
 
 logger = init_logger(__name__)
 
@@ -108,7 +111,7 @@ class GPUWorker:
             if output_batch.timings:
                 duration_ms = (time.monotonic() - start_time) * 1000
                 output_batch.timings.total_duration_ms = duration_ms
-                if req.perf_dump_path is not None:
+                if StageProfiler.metrics_enabled():
                     PerformanceLogger.log_request_summary(timings=output_batch.timings)
         except Exception as e:
             logger.error(