[ONNX ] Update `Trilu` to accept single value tensor #28551

Job	Run time
Smart_CI	18s
Build	12m 14s
Conformance	0s
Samples	0s
CPU functional tests	0s
GPU_Stub	0s
NVIDIA plugin	0s
OpenVINO JS API	0s
ONNX Runtime Integration	0s
OpenVINO tokenizers extension	0s
Debian Packages / Debian Packages	2m 24s
C++ unit tests / C++ unit tests	1m 37s
ONNX Models Tests / ONNX Models tests	25m 47s
Python unit tests	0s
PyTorch Models tests	0s
TensorFlow Hugging Face Models tests	0s
TensorFlow TF Hub Models tests	0s
TensorFlow Models tests	0s
ci/gha_overall_status	1s
	42m 21s

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