[logging] Log FillResponseEvent when the corresponding fill request is

cancelled. It is a gap that causes fillRequest count higher than
fillResponse count.

Test: atest CtsAutoFillServiceTestCases
Flag: android.service.autofill.improve_fill_dialog_aconfig
Bug: 399177967
Change-Id: I4e0e4e8ded033b07685bf90da37b15095bc8faab