Revert "Revert "Do not block autofill on waiting for the IME response""

This reverts commit 949ec8ad.

Reason for revert: will check in the original patch with a fix

Test: manual
Test: atest android.autofillservice.cts.inline
Bug: 151580124
Bug: 150757314

Change-Id: I37d05eb627595c25018dd82e50db3a9b054c90a5