[SYCL] Optimize getUrEvents #814

Job	Run time
[PR] Benchmark suite testing / Framework test: PVC_PERF, L0, Minimal preset	14m 9s
[Nightly] Build SYCL	-1s
[Dispatch] Sanitize inputs	-1s
[Dispatch] Build SYCL	-1s
[Nightly] Benchmarks	-1s
[Dispatch] Benchmarks	0s
	14m 5s

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