Use Slog.w() instead of wtf() when the Augmented Autofill Service times out.

Also increased timeout from 2s to 5s.

Test: forced a sample service to time out and looked at logs
Test: atest CtsAutoFillServiceTestCases:android.autofillservice.cts.augmented.AugmentedLoginActivityTest

Fixes: 124313461

Change-Id: I61713bd38b512272bfb697986831676c90547eb3