Add Gemma4 EAGLE-3 eager reference #8469

Job	Run time
test-xnnpack / test-backend-linux (xnnpack, models) / linux-job	20m 45s
test-xnnpack / test-backend-linux (xnnpack, operators) / linux-job	14m 52s
test-xnnpack / test-backend-macos	0s
test-xnnpack / package-golden-artifacts	4m 28s
	40m 5s

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