onnxruntime

cb169366 - [WebGPU] Fix profiling timestamp alignment with ORT profiler (#29021)

[WebGPU] Fix profiling timestamp alignment with ORT profiler (#29021) ### Description Add CPU time offset to WebGPU GPU profiling timestamps so they align with the ORT profiler's time base (microseconds since profiling start). Previously GPU events started from 0, causing misalignment in trace viewers. ### Motivation and Context See above.