src/webgpu/util/texture/texel_data: Use `,` for member delimiters (#1215)
src/webgpu/util/texture/texel_data: Use `,` for member delimiters (#1215)

instead of `;`.
Spec change: https://github.com/gpuweb/gpuweb/pull/2656
gpuweb/cts,gpuweb/cts,gpuweb/cts