Zephyr: Update to Zephyr 4.4 #970

Job	Run time
test-webgpu / test-backend-linux (webgpu, models) / linux-job	26m 3s
test-webgpu / test-backend-linux (webgpu, operators) / linux-job	47m 16s
test-webgpu / test-backend-macos	-8s
test-webgpu / package-golden-artifacts	1m 44s
	1h 14m 55s

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