Skip event count assertion on reporting mode

Sensors with reporting mode "One-shot" and "Special" will not trigger event on "activate", hence the test that expecting the event
count after calling activate() will fail.

Skipping the event count assertion if the device only has sensors with these reporting mode.

Bug: 349268211
Test: run vts -m VtsAidlHalSensorsTargetTest -t Sensors/SensorsAidlTest#CallInitializeTwice/0_android_hardware_sensors_ISensors_default
Change-Id: I656a652fc205961b8e6207942ccf16a71a08dc14