Wifi usability: Add screen status into WifiIsUnusableEvent

Currently screen status is not included in WifiIsUnusableEvent. Need to
add this status to allow for better classification of WifiIsUnusableEvent.

Bug: 126640380

Test: frameworks/base/wifi/tests/runtests.sh

Change-Id: I04fb8c50a114053a70de3a939e193715e515d983
Signed-off-by: Mingguang Xu <mingguangxu@google.com>