Fix test_trt_convert_layer_norm failure on TensorRT 10.3.0

[yumin066]

PR Category

Environment Adaptation

PR Types

Bug fixes

Description

test_trt_convert_layer_norm failure on TensorRT 10.3.0. Segmentation fault is reported due to nullptr access. The nullptr is caused by small workspace size, and segmentation fault is caused by lacking of nullptr checking. I've added nullptr checking login to engine.cc, and expanded workspace size to 8192, to adapt to TensorRT 10.3.0.

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