webgpu : add CONV_2D_DW (depthwise conv2d) kernel (#25847)

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* webgpu : add CONV_2D_DW (depthwise conv2d) kernel

Implement GGML_OP_CONV_2D_DW for the WebGPU backend,
ported from the Vulkan backend's conv2d_dw.comp.

Assisted-by: Claude Opus-4.8

* Remove unnecessary comments in webgpu support

* update supported ops tables, triggered by adding webgpu CONV_2D_DW

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m1el authored and GitHub committed 2026-07-22 17:24:44 +09:00

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docs/ops/WebGPU.csv

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