Unique .so paths to support multiple CUDA delegates #3091

Job	Run time
test-xnnpack / test-backend-linux (xnnpack, operators) / linux-job	14m 41s
test-xnnpack / test-backend-linux (xnnpack, models) / linux-job	49m 8s
test-xnnpack / test-backend-macos	0s
test-xnnpack / package-golden-artifacts	3m 42s
	1h 7m 31s

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