Fix the bug that tensorRT batch_size does not take effect (#11672)

* Fix the bug that tensorRT batch_size does not take effect

Signed-off-by: wuhongsheng <664116298@qq.com>

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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---------

Signed-off-by: wuhongsheng <664116298@qq.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

benchmarks.py

@@ -76,7 +76,12 @@ def run(
             if f == '-':
                 w = weights  # PyTorch format
             else:
-                w = export.run(weights=weights, imgsz=[imgsz], include=[f], device=device, half=half)[-1]  # all others
+                w = export.run(weights=weights,
+                               imgsz=[imgsz],
+                               include=[f],
+                               batch_size=batch_size,
+                               device=device,
+                               half=half)[-1]  # all others
             assert suffix in str(w), 'export failed'
 
             # Validate