Reduce DPAD navigation logspam with killable IME

On Android TV, when the killable IME feature is enabled, navigating
through the interface using the DPAD buttons on a remote controller
leads to logspam on logcat. This CL takes the feature into account
and lowers the severity of the log message about the input event
not being delivered to the IME when appropriate.

Bug: 258201658
Test: manually on a tv device
Change-Id: I04b85aaf13e1442f070d8dfcff7cf9bd599dac0a