Switch VGF backend from custom vulkan-headers-1.4.343 to standardized khronos (#19031) #33446

Job	Run time
gather-models	8s
test-models-linux (cmake, vit, portable, linux.2xlarge, 90) / linux-job	16m 54s
test-models-linux (buck2, mv3, portable, linux.2xlarge, 90) / linux-job	9m 41s
test-models-linux (buck2, mv3, xnnpack-quantization-delegation, linux.2xlarge, 90) / linux-job	11m 2s
test-models-linux (cmake, mv3, xnnpack-quantization-delegation, linux.2xlarge, 90) / linux-job	9m 35s
test-models-linux (cmake, vit, xnnpack-quantization-delegation, linux.2xlarge, 90) / linux-job	10m 34s
test-models-linux (cmake, mv3, portable, linux.2xlarge, 90) / linux-job	9m 21s
	1h 7m 15s

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