Fix incorrect flush reason logged

The event flush because of forcing flush but it is logged with full
reason. This change add a new reason for force_flush and log the
event if the reason is force_flush to help debugging.

Bug: 216982223
Test: manual. Using allowed app and check the log
Change-Id: I13365ce59e063f41cd0379fcf932e6b92cc7ee1e
2 files changed