[SYCL][E2E] Fix L0 barrier test to handle counting events (intel#15053)

- Test2 in level_zero_barrier_optimization.cpp will only see Event
Create or Host Reset if counting events are not used from the cache,
which is default for immediate command list and in order list use.
- counting events cannot be reset so neither of these prints would be
seen so this is optional.

Signed-off-by: Neil R. Spruit <neil.r.spruit@intel.com>

sycl/test-e2e/Plugin/level_zero_barrier_optimization.cpp

@@ -55,7 +55,7 @@ int main() {
 
     // CHECK: Test2
     // CHECK: ---> urEnqueueEventsWaitWithBarrier
-    // CHECK: ZE ---> {{zeEventCreate|zeEventHostReset}}
+    // CHECK-OPT: ZE ---> {{zeEventCreate|zeEventHostReset}}
     // CHECK: ZE ---> zeCommandListAppendWaitOnEvents
     // CHECK: ZE ---> zeCommandListAppendSignalEvent
     // CHECK: ) -> UR_RESULT_SUCCESS